Answer:pookie dookie
Explanation:
Brad and Juan conducted several tests to determine the properties of silver metal. They noted that is was white, and conducted both electricity and heat. They computed the density to be 10.49 g/cm3. Silver did not react with water but in nitric acid, gas was released. What evidence supports a chemical change in the silver? A) Silver conducts electricity. B) Silver reacts with nitric acid to produce a gas. C) The color of silver at room temperature is white. D) Silver conducted heat and as the temperature increased, became more malleable.
Answer:
B because it should be
Explanation:
and that is right answer??
Which is the correct electron configuration for sodium (Na)?
A. 1s22s22p62d1
B. 1s22s22p63s1
C. 1s22p63d3
Answer: [tex]1s^22s^22p^63s^1[/tex]
Explanation:
Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.
The electrons are filled according to Afbau's rule in order of increasing energies.
Total number of electrons of sodium are 11 as the atomic number of sodium is 11. The electronic configuration of sodium will be represented as:
[tex][Na]:11:1s^22s^22p^63s^1[/tex]
Balance the equation for the formation of ammonia from hydrogen gas and nitrogen gas using a set of the lowest possible integer coefficients. what is the coefficient in front of ammonia, nh3, in the balanced equation? n2 (g) + h2 (g) → nh3 (g)
Answer:
The balanced equation is
[tex]N_{2}[/tex] (g) + 3 [tex]H_{2}[/tex](g) ⇒ 2 [tex]NH_{3}[/tex] (g)
The coefficient in front of ammonia, [tex]NH_{3}[/tex], in the balanced equation is 2.
Explanation:
The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.
Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts
Left side: 2 nitrogen and 2 hydrogen. Right side: 1 nitrogen and 3 hydrogen.The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.
In this case you can start balancing the hydrogen. On the left side there is an amount of two hydrogens, while on the right side there are three. In order to match the amount of hydrogen on both sides, the easiest way to do this is by exchanging these numbers and adding them as coefficients in front of each molecule. It is as follows:
[tex]N_{2}[/tex] (g) + 3 [tex]H_{2}[/tex](g) ⇒ 2 [tex]NH_{3}[/tex] (g)
By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction. So now you can calculate again the amount of elements on each side of the chemical reaction:
Left side: 2 nitrogen and 6 hydrogen. Right side: 2 nitrogen and 6 hydrogen.You can see that you have the same amount of each element on each side of the chemical equation. This indicates that the equation is balanced.
And the coefficient in front of ammonia, [tex]NH_{3}[/tex], in the balanced equation is 2.
Which two trends increase when one moves across a period from left to right?
a) ionization energy and electronegativity
b) ionization energy and atomic size
c) electronegativity and atomic size
d) atomic size and size of cations
Answer is: a) ionization energy and electronegativity.
1) The ionization energy (Ei) is the minimum amount of energy required to remove the valence electron, when element lose electrons, oxidation number of element grows (oxidation process).
Barium, potassium and arsenic are metals (easily lost valence electrons), chlorine is nonmetal (easily gain electrons).
Alkaline metals (far left in Periodic table) have lowest ionizations energy and easy remove valence electrons (one electron), earth alkaline metals (next right to alkaline metals) have higher ionization energy than alkaline metals, because they have two valence electrons.
Nonmetals are far right in the main group and they have highest ionization energy, because they have many valence electrons.
2) Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.
Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom.
Nonmetals hava higher electronegativity than metals and metalloids.
3) The atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.
Ionization energy and electronegativity are the two trends than increase when one moves across a period from left to right.
Further ExplanationIonization energyIonization energy is the energy required to remove outermost electrons from the outermost energy level. Energy is required to remove an electron from an atom.The closer an electron is to the nucleus the more energy is required, since the electron is more tightly bound to the atom thus making it more difficult to remove, hence higher ionization energy.Ionization energy increases across the periods and decreases down the group from top to bottom. Additionally, the ionization energy increases with subsequent removal of a second or a third electron.First ionization energy This is the energy required to remove the first electron from the outermost energy level of an atom.Energy needed to remove the second electron to form a divalent cation is called the second ionization energy.Trends in ionization energy Down the group(top to bottom)Ionization energy decreases down the groups in the periodic table from top to bottom.It is because as you move down the group the number of energy levels increases making the outermost electrons get further from the nucleus reducing the strength of attraction to the nucleus.This means less energy will be required compared to an atoms of elements at the top of the groups.Across the period (left to right)Ionization energy increases across the period from left to right.This can be explained by an increase in nuclear energy as extra protons are added to the nucleus across the period increasing the strength of attraction of electrons to the nucleus.Consequently, more energy is needed to remove electrons from the nucleus. ElectronegativityElectronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself. Atoms with higher electronegativity attracts more electrons towards it, electrons are closer to that atom. Non-metals have higher electronegativity than metals and metalloids.Atomic radiusThe atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.Keywords: Ionization energy, electronegativity
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Subject: Chemistry
Topic: Periodic table and chemical families
Sub-topic: Ionization energy and electronegativity
The vapor pressure of ethanol at its normal boiling point would be
Calculate the molarity of a solution that contains 15.7g of caco3 dissolved in enough water to make 275 ml of solution
Taking into account the definition of molarity, the molarity of a solution that contains 15.7g of CaCO₃ dissolved in enough water to make 275 mL of solution is 0.57 [tex]\frac{moles}{liter}[/tex].
Definition of molarityMolar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
[tex]Molarity= \frac{number of moles}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex].
This caseIn this case, you have:
number of moles: [tex]15.7 gramsx\frac{1 mole}{100 grams} = 0.157 moles[/tex] , being 100 [tex]\frac{grams}{mole}[/tex] the molar mass of CaCO₃volume: 275 mL= 0.275 L, being 1000 mL= 1 LReplacing in the definition of molarity:
[tex]Molarity= \frac{0.157 moles}{0.275 L}[/tex]
Solving:
Molarity= 0.57 [tex]\frac{moles}{liter}[/tex]
Finally, the molarity of a solution that contains 15.7g of CaCO₃ dissolved in enough water to make 275 mL of solution is 0.57 [tex]\frac{moles}{liter}[/tex].
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How many grams of glucose are needed to prepare 400. ml of a 2.0%(m/v) glucose solution?
Answer:8 grams of glucose are needed to prepare 400. ml of a 2.0%(m/v) glucose solution.
Explanation:
Volume of the solution = 400 mL
Mass by volume percentage of the solution = 2%
Mass of the glucose = m
The mass by volume percent is given by formula ;
[tex](m/v\%)=\frac{\text{mass of the solute}}{\text{Volume of the solution}}\times 100[/tex]
[tex]2\%=\frac{m}{400}\times 100[/tex]
m = 8 g
8 grams of glucose are needed to prepare 400. ml of a 2.0%(m/v) glucose solution.
Mass Concentration is generally denoted as mass of solute (in grams) per ml volume of solution.
Mass Concentration:
It is generally denoted as mass of solute (in grams) per ml volume of solution. It can be calculated by formula,
[tex]\bold {p = \frac{m}{v} \times 100 }[/tex]
Where,
p = mass concentration (m/v%) = 2%
m = mass in grams = ?
v = volume in mL = 400mL
Put the values in the formula
[tex]\bold {2 = \frac{m}{400} \times 100 }[/tex]
[tex]\bold { m = 8 }[/tex]
Hence, we can conclude that the 8 g of glucose is needed to prepare 400mL of a 2%(m/v) solution.
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Water has a density of 1.0 g/ml. which of these objects will float in water? object i: mass = 50.0 g; volume = 40.2 ml object ii: mass = 59.3 g; volume = 62.5 ml object iii: mass = 100.0 g; volume = 50.0 ml
Density is the ratio of mass and volume. Object II will float in water as it has a density of 0.95 g/ml.
What is density?Density is the measuring capacity that concerns the mass and the volume occupied by the object. It is calculated as:
Density (D) = Mass (M) / Volume (V)
For object I density is calculated as:
50. 0 / 40.2 = 1.24 g/ml
For object II D is calculated as:
59.3/62.5 = 0.9488 g/ml
For object III D is calculated as:
100 / 50 = 2 g/ml
Therefore, object II will float on water as it has less density than water.
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The emission of electromagnetic radiation by an excited atom is best explained by
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, the emission of electromagnetic radiation by an excited atom is best explained by photoelectronic effect.
What is electromagnetic wave?Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave.
There is a relation between energy of wave. frequency of wave, and wavelength of wave
Mathematically,
E=hc/λ
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
c is speed of light that is 3×10⁸m/s
λ is the wavelength of electromagnetic wave
The emission of electromagnetic radiation by an excited atom is best explained by photoelectronic effect.
Therefore, the emission of electromagnetic radiation by an excited atom is best explained by photoelectronic effect.
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Which two trends increase when one moves across a period from left to right?
atomic size and size of cations
ionization energy and atomic size
ionization energy and electronegativity
electronegativity and atomic size
What is the reason for the change in ionization energy as you go down a group
Ionization energy of an atom decreases down a group. It is due to the increase in the number of electrons and orbitals and thus screening of electrons reduces the nuclear pull.
What is ionization energy?Ionization energy is the minimum energy required to remove the loosely bound valence electron from an atom. From left to right in periodic table, the electronegativity of atoms increases thereby the ionization energy.
The positive charge of protons in the nucleus attracts the revolving electrons and each electron experiences a nuclear attractive pull which keep the electrons surrounds the nucleus.
However, one electron is shielded from the attractive pulling by its neighboring electrons and this shielding or screening increases with increases with increase in number of electrons Hence as the shielding increases, the net nuclear force decreases make it easy to remove the valence electron.
Down a group, the number of shells or orbitals increases and the electrons becomes more far from the nucleus and thus more shielded results in the decrease in ionization energy.
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The process by which a radioactive isotope loses protons or other materials from its nucleus is called
If a neutral atom gains electrons, what type of particle is formed?
How many molecules of ammonia are present in 3.0 g of ammonia (Formula = NH3)?
A) 1.2 × 1024
B) 1.8 × 101
C) 1.1 × 1023
D) 2.9 × 10-25
E) 3.6 × 1023
The number of molecules of ammonia present in 3.0 g of ammonia is equal to 1.1×10²³.
What is Avogadro's number?Avogadro’s number expressed the number of units in one mole of any substance. Generally, these units can be atoms, ions, electrons, protons, or molecules depending upon the type of the reaction or reactant and product.
The value of Avogadro’s number is 6.022×10²³. Avogadro’s number is usually denoted by the symbol ‘N[tex]_A[/tex]’.
Given, the mass of the ammonia = 3g
The molecular mass of the ammonia (NH₃) = 14 + 3(1) = 17g
As one mole of the ammonia contains molecules = Avogadro number
It means 17 grams of ammonia has molecules = 6.022×10²³
Then, 3 grams of ammonia will have molecules of ammonia
= 6.022 × 10²³ × (3/17)
= 1.1 × 10²³ molecules
Therefore, the number of molecules of ammonia in 3 g of ammonia is 1.1 × 10²³ molecules.
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Final answer:
To find the number of ammonia molecules in 3.0g of ammonia, you calculate moles from the given mass and molar mass, then use Avogadro's number to find the molecule quantity. The result is approximately 1.06 × 10²³ molecules, matching closely to option C in the question.
Explanation:
To determine how many molecules of ammonia (NH₃) are present in 3.0g of ammonia, we first need to calculate the molar mass of NH₃. The atomic masses of nitrogen (N) and hydrogen (H) are approximately 14.01 g/mol and 1.01 g/mol, respectively. A single molecule of NH₃ consists of one nitrogen atom and three hydrogen atoms, which gives us:
Molar mass of NH₃ = (1 × 14.01 g/mol) + (3 × 1.01 g/mol) = 14.01 g/mol + 3.03 g/mol = 17.04 g/mol
Next, we use the molar mass to convert grams of NH₃ to moles:
Moles of NH₃ = mass (g) ÷ molar mass (g/mol) = 3.0 g ÷ 17.04 g/mol = 0.176 moles of NH₃
Now we can use Avogadro's number (≈ 6.022 × 10²³ molecules/mol) to find the number of molecules:
Number of molecules = moles × Avogadro's number = 0.176 moles × 6.022 × 10²³ molecules/mol
This calculation gives us approximately:
Number of molecules ≈ 1.06 × 10²³ molecules of NH₃
Looking at the options provided, the closest answer to our calculated value is C) 1.1 × 10²³, which must be a rounded version of the value we obtained.
How do the properties of the p block metals compare with those of the metals in the s and d blocks?
Final answer:
p-block metals have higher electronegativities and ionization energies compared to the reactive s-block metals. d-block metals, known as transition metals, posses variable oxidation states and form colorful compounds, setting them apart from p-block and s-block elements.
Explanation:
The properties of p-block metals differ considerably compared to those in the s-block and d-block. One of the most distinguishing features of p-block metals is their position on the periodic table - they are found in the right-most six columns. Elements in the p-block, which include both metals and nonmetals, typically have higher electronegativities and ionization energies than s-block elements, which consists mostly of metals with low electronegativities like the alkali and alkaline earth metals.
d-block elements, also known as transition metals, have a much larger range of oxidation states and, due to incomplete inner d subshells, typically exhibit properties like colorful compounds, variable oxidation states, and often function as good catalysts. Electronegativity and electron affinity generally increase from left to right across the periodic table, affecting the chemical properties of these elements.
s-block elements tend to be softer and more reactive due to their single valence electron (alkali metals) or two valence electrons (alkaline earth metals). They usually have lower melting and boiling points compared to most d-block metals. The d-block elements are characterized by their partially filled d-orbitals which allow them to form a variety of complex ions and colored compounds.
Sodium is a metal m, like copper. Suggest reasons why sodium cannot be used in electrical wires.
Sodium cannot be used in electrical wires due to its high reactivity and lower electrical conductivity compared to metals like copper.
Additionally, sodium is too soft and unsafe for wiring purposes.
Copper is preferred for its high conductivity and ability to be made into wires.Sodium is a metal, just like copper, but it cannot be used in electrical wires for several reasons. First, sodium is highly reactive and must be stored out of contact with air because it reacts violently with oxygen and water, which makes it unsafe for use in electrical wiring. Second, while metals like copper are excellent electrical conductors due to their high conductivity, sodium does not possess the same level of conductivity. Additionally, sodium's physical properties, such as its softness, make it unsuitable for being stretched into thin wires required for electrical applications.Copper is preferred because it has high electrical conductivity, resistance to corrosion, and can be easily drawn into wires.
Describe several products of photosynthesis important to humans
How do ionic compounds and molecular compounds differ in their relative melting and boiling points? which would you expect to have the higher melting point? cao or cs2?
Answer:
Ionic compounds typically have much higher melting points than molecular compounds. ... To melt a molecular substance, you need to break these weak intermolecular forces between neutral molecules, which is why ionic compounds generally have much higher melting points than molecular compounds.
Explanation:
what is the volume of 1 mole of helium gas when the pressure is 1.47 atm and the temperature is 287k
The volume of 1 mole of helium gas when the pressure is 1.47 atm and the temperature is 287k is 16.02 litres.
What is combined gas law?The combined gas law is the law of of gaseous state which is made by combination of Boyle's law, Charle's law, Avogadro's law and Gay Lussac's law.
It is a mathematical expression that relates Pressure, Volume and Temperature.
(P1 × V1)÷T1 = (P2 × V2)÷T2
Also, we can simply write it as
PV = nRT
P = 1.47 atm
V = ?
n = 1
R = 0.0821
T = 287K
V = nRT ÷ P
V = 16.02 litres
Therefore, The volume of 1 mole of helium gas when the pressure is 1.47 atm and the temperature is 287k is 16.02 litres.
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Find the concentration of chloride ions in a solution that is 0.110 m in sodium chloride (nacl) and 0.11 m in magnesium chloride (mgcl2).
The concentration of Chloride ions in the solution of NaCl and Magnesium chloride has been 0.165 M.
The dissociation of the compound in the solution has been resulted in the formation of the constituent ions.
The concentration of the ions in the sample has been determined by the stoichiometric coefficient of the balanced equation.
Computation for concentration of Chloride ionsThe concentration of Cl ions from sodium chloride solution has been given by:[tex]\rm NaCl\;\rightarrow\;Na^+\;+\;Cl^-[/tex]
The concentration of Cl ions has been:
[tex]\rm 1\;M\;NaCl=1\;M\;Cl^-\\ 0.11\;M\;NaCl= 0.11\;M\;Cl^-[/tex]
The Cl ions from NaCl has been 0.11 M.
The Cl ions from magnesium chloride have been given as:[tex]\rm MgCl_2\;\rightarrow\;Mg^2^+\;+\;2\;Cl^-[/tex]
The concentration of Cl ions has been:
[tex]\rm 1\;M\;NaCl=0.5\;M\;Cl^-\\ 0.11\;M\;NaCl= 0.11\;\times\;0.5\;M\;Cl^-\\0.11\;M\;NaCl=0.055\;M\;Cl^-[/tex]
The Cl ions from Magnesium chloride have been 0.055 M.
The total concentration of Cl ion has been:[tex]\rm Cl^-=NaCl\;+\;MgCl_2\\Cl^-=0.11\;+\;0.055\;M\\Cl^-=0.165\;M[/tex]
The concentration of Chloride ions in the solution of NaCl and Magnesium chloride has been 0.165 M.
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Describe the three ways heat can be transferred-radiation, conduction, and convection
Final answer:
Heat is transferred in three ways: conduction through direct contact, convection by fluid movement, and radiation through electromagnetic waves. Each method requires a temperature difference and can occur together.
Explanation:
Heat Transfer Methods
Heat transfer occurs through three primary methods: conduction, convection, and radiation. These processes are all driven by a temperature difference between regions or objects.
Conduction
Conduction is the transfer of heat through direct contact between materials. The rate of heat transfer (Q/t) in conduction is proportional to the temperature difference between the two objects and the area in contact, and inversely proportional to the distance between them.
Convection
Convection involves the transfer of heat by the physical movement of fluid (such as gases or liquids). This method occurs in natural phenomena like wind patterns, ocean currents, and even in heating up a pot of water on the stove.
Radiation
Radiation refers to the transfer of heat through electromagnetic waves, such as the heat from the sun reaching Earth or heat emitted from a light bulb.
These methods can occur simultaneously in various processes and are essential for understanding how heat is transferred in different contexts.
One of the alkali metals reacts with oxygen to form a solid white substance. when this substance is dissolved in water, the solution gives a positive test for hydrogen peroxide, h2o2. when the solution is tested in a burner flame, a lilac-purple flame is produced. what is the likely identity of the metal?
Answer:
Potassium (K)
Explanation:
First, you need to know the possible alkali metals, which are:
Sodium (Na), Litium (Li), Potassium (K) and Cesium (Cs), rubidium (Rb).
Now, the reaction that is taking place is the following:
M + O2 ------> M2On
Where n should be the oxidation state of the metal. In this case, most of the alkalin metals have an oxidation state of +1, so, this number should be 1. However some elements can produce the peroxyde, like litium, sodium and potassium.
The following reaction would be:
M2O + H2O --------> MOH
Now, the hint here is that the solution is tested with a flame. This, would be, the final hint to know which element this is.
In the case of sodium, litium and potassium, the reactions being held are as following:
Li + O2 ------> Li2O2 Li2O2 + 2H2O ------> 2LiOH + H2O2
Na + O2 ------> Na2O2 Na2O2 + 2H2O ------> 2NaOH + H2O2
K + O2 ------> K2O2 K2O2 + 2H2O ------> 2KOH + H2O2
Now, all of these elements throw a different color in the flame. Litium is a red or crimson. Sodium is usually yellow, and finally the potassium is always purple.
Therefore the identity of this metal would have to be potassium.
A group of two or more atoms held together by mutually shared electrons are called ________.
What are the isotopes? how all of the isotopes of an atom are similar and how are they different?
What is the heat capacity of 170 g of liquid water?
The heat capacity of a substance is the amount of heat needed to raise its temperature by one degree Celsius. In the case of 170g of water, with a specific heat capacity of 4.18 J/g°C, the heat capacity would be approximately 710.6 J/°C.
Explanation:The heat capacity of a substance is defined as the amount of heat required to raise the temperature of that substance by one degree Celsius. For water, the specific heat capacity is around 4.18 joules per gram per degree Celsius. Therefore, to find the heat capacity of 170 g of water, we multiply the mass of the water by its specific heat capacity.
So, the calculation would go as follows:
Heat capacity = mass of water * specific heat capacity Heat capacity = 170 g * 4.18 J/g°C Therefore, the heat capacity of 170 g of water is approximately 710.6 J/°C.
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What is the mass of a 300 ml sample of gaseous hydrogen chloride at 2.0 atm and 30c?
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Ideal gas is a hypothetical gas. Vanderwaal gas can behave as ideal gas at low pressure and high temperature. Therefore, the mass of a 300 ml sample of gaseous hydrogen chloride at 2.0 atm and 30°C is 0.00868g.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of gas
V= volume of gas
n =number of moles of gas
T =temperature of gas
R = Gas constant = 0.0821 L.atm/K.mol
substituting all the given values in the above equation
(2 )(0.3 ) = n(8.314 )(303)
0.6 = n(2519.142)
n = 0.00023818 mols of HCl
mass of HCl= 0.00023818 mols of HCl ×36.46g of HCl/ 1 mol of HCl
mass of HCl = 0.00868g
Therefore, the mass of a 300 ml sample of gaseous hydrogen chloride at 2.0 atm and 30°C is 0.00868g.
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Final answer:
To find the mass of a 300 ml sample of gaseous hydrogen chloride at 2.0 atm and 30°C, use the Ideal Gas Law to determine the number of moles, then multiply by the molar mass of HCl. The approximate mass is 0.89 grams.
Explanation:
To calculate the mass of a 300 ml sample of gaseous hydrogen chloride at 2.0 atm and 30°C, we can use the Ideal Gas Law, which is PV = nRT. In this case, we need to rearrange the equation to solve for n (the number of moles), then convert moles to mass using the molar mass of HCl.
First, convert the volume from milliliters to liters: 300 ml = 0.300 L.
Next, since the temperature is given in degrees Celsius, convert it to Kelvin: T(K) = 30°C + 273.15 = 303.15 K.
The Ideal Gas Law in terms of n is n = PV / RT. Here, P is the pressure in atm (2.0 atm), V is the volume in liters (0.300 L), R is the ideal gas constant (0.0821 L·atm/K·mol), and T is the temperature in Kelvin (303.15 K).
Substituting the values:
n = (2.0 atm * 0.300 L) / (0.0821 L·atm/K·mol * 303.15 K)n ≈ 0.0244 moles (rounded to the correct number of significant figures)Finally, we find the mass by multiplying the number of moles by the molar mass of HCl, which is approximately 36.46 g/mol.
Mass = n * molar mass of HCl = 0.0244 moles * 36.46 g/mol ≈ 0.89 g (rounded to two significant figures)
The mass of the 300 ml sample of gaseous hydrogen chloride at 2.0 atm and 30°C is approximately 0.89 grams.
What are group 6a elements likely to do when they form ions-gain electrons or lose them?what are group 6a elements likely to do when they form ions-gain electrons or lose them?lose electronsgain electrons?
Openstudy the deflection of alpha particles in rutherford's gold foil experiments resulted in what change to the atomic model?
What would be the formula of the compound iron (III) phosphide? Fe2P3 Fe3P FeP3 FeP
Answer : The correct formula of the given compound will be, [tex]FeP[/tex]
Explanation :
Iron (III) phosphide is an ionic compound because iron element is a metal and phosphorous element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.
The nomenclature of ionic compounds is given by:
1. Positive ion is written first.
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
3. In case of transition metals, the oxidation state are written in roman numerals in bracket in-front of positive ions.
The charge on iron is (+3) and the the charge on phosphide is (-3). The charges are balanced.
Hence, the formula of the compound iron (III) phosphide will be [tex]FeP[/tex]
The electron microscope has been widely used to obtain highly magnified images of biological and other types of materials. when an electron is accelerated through a particular potential field, it attains a speed of 4.15 106 m/s. what is the characteristic wavelength of this electron?