S Block - Group 2 Questions and Answers

Inorganic Chemistry
S Block - Group 2What is the only possible value of me for an electron in an s orbital?
Express your answer numerically.
Part B
What are the possible values of me for an electron in a d orbital?
Express your answer numerically with sequential values separated by commas.
Which of the following set of quantum numbers (ordered n, l, me, m.) are possible for an electron in an atom?
Check all that apply.
5, 3, -3, 1/2
2,1,0,-1
3, 2, 2, -1/2
2, 2, 2, 1/2
4,2,3, -1/2
3,1, -2, -1/2
-1,0,0,-1/2
5,3,0, 1/2

Inorganic Chemistry
S Block - Group 2Select all the statements that are true when magnesium reacts with chlorine:
A. The compound that forms is MgCl
B. Magnesium transfers electrons to chlorine
C. Magnesium becomes a +2 cation
D. Chlorine becomes a -2 anion
DE. Chlorine transfers electrons to magnesium
F. The formula for the compound formed is MgCl2
G. Chlorine becomes an anion

Inorganic Chemistry
S Block - Group 2What mass of ammonia (NH3) will form when 8.6 g of N₂ reacts with enough H₂
to react completely?
N₂ (g) + 3 H₂ (g) → 2 NH3 (9)
2.05 x 10³ g
10.5 g
20.9 g
2.62 g

Inorganic Chemistry
S Block - Group 2In an experiment, magnesium sulfate heptahydrate, Epsom salt, is heated to a constant mass. What
is the best representation of what happened in this experiment?
1. MgSO4 (byd) → MgSO4(gnhyd)
2. magnesium sulfate heptahydrate → anhydrous magnesium sulfate
3. MgSO.7H₂O → MgSO, + 7 H₂O
4. MgSO.H₂O(s) → MgSO.(s) + H₂O(g)

Inorganic Chemistry
S Block - Group 2For each reaction in the table below, write the chemical formulae of any reactants that will be oxidized in second column of the table. Write the chemical formulae of any reactants that will be reduced in the third column.

Inorganic Chemistry
S Block - Group 2What is the concentration of copper ions in an aqueous solution that is 2.0 M Cu₂SO4? (2 significant figures)
Hint: How many copper ions does one formula unit produce?
a. 1.0 M Cu
b. 2.0 M Cut
c. 4.0 M Cu+
d. 0.5 M Cu

Inorganic Chemistry
S Block - Group 2Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced.

Inorganic Chemistry
S Block - Group 253.1 g of calcium sulfate dihydrate, gypsum, is heated in an oven until all the water is driven off. What is the mass of the anhydrous compound?
Provide your answer in decimal notation rounded to the appropriate number of significant figures.

Inorganic Chemistry
S Block - Group 2Hematite, Fe2O3, is an important ore of iron. The free metal is obtained by reacting hematite with carbon monoxide, CO, in a blast furnace. Carbon monoxide is
formed in the furnace by partial combustion of carbon. The reaction is
Fe2O3(s) + 3CO(g) → 2Fe(s) + 3CO2(g)
How many grams of iron can be produced from 1.62×103 g Fe2O3 reacting with an excess of CO?
HOW DO WE GET THERE?
How many moles are present in 1.62×10³ g of Fe₂O3(s)?
mol Fe2O3(s)

Inorganic Chemistry
S Block - Group 2Which of the following property of magnesium does not resemble with lithium?
Bicarbonates of both exist in solution state but not in solidform
Carbonates of both produce CO₂ on heating
Both can produce nitride on reaction with N₂
Both can be identified by flame colour test

Inorganic Chemistry
S Block - Group 2The first ionization energy of Mg is 735 kJ/mol. The second ionization energy is:
less than 735 kJ/mol
735 kJ/mol
More information is needed to answer this question.
greater than 735 kJ/mol
None of these choices are correct.

Inorganic Chemistry
S Block - Group 2The successive ionization energies for an unknown element are
I₁ = 896 kJ/mol
1₂-1752 kJ/mol
13-14,807 kJ/mol
14-17,948 kJ/mol
To which family (that is, which group) in the periodic table does the unknown element most
likely belong?

Inorganic Chemistry
S Block - Group 2Calculate the number of liters of oxygen that are needed to react with 310. mL of CH4 at 80.0 °C and 790 mm Hg in a complete combustion reaction.
0.155 L
0.620 L
6.20×10^5 L
620 L

Inorganic Chemistry
S Block - Group 2Boyle's law states that:
The volume of a fixed amount of gas is directly proportional to its temperature in Kelvin at constant pressure.
Equal amounts of gases occupy the same volume at constant temperature and pressure.
The rates of effusion of gases are inversely proportional to the square roots of their molar masses.
The total pressure of a mixture of gases is the simple sum of the partial pressure of all of the gaseous compounds.
The volume of a fixed amount of gas is inversely proportional to its pressure at constant temperature.

Inorganic Chemistry
S Block - Group 2For the following reaction, 23.0 grams of sodium chloride are allowed to react with 71.5 grams of silver nitrate.
sodium chloride (aq) + silver nitrate (aq) →silver chloride (s) + sodium nitrate (aq)
What is the maximum amount of silver chloride that can be formed?
What is the FORMULA for the limiting reagent?
What amount of the excess reagent remains after the reaction is complete?

Inorganic Chemistry
S Block - Group 2.A sample of Be weighs 37.0 grams. Will a sample of Al that contains the same number of atoms weigh more or less than 37.0 grams? (more, less):_________
Calculate the mass of a sample of Al that contains the same number of atoms _______grams of Al