Farahat Chapter 18 MCQ

These are guesses on what I believe to be the right answer for these questions

1. Which of the following is a metalloid?

a. aluminum

b. carbon

c. fluorine

d. lithium

e. silicon

e. silicon

Which of the following exhibits the greatest metallic character?

a. Li

b. Al

c. Rb

d. Be

e. Mg

c. Rb

True or False? Hydrogen is a nonmetal and lithium is an active metal, even though they are in the same group.

a. True. Such differences are common for elements in the same group.

b. False. Both hydrogen and lithium are nonmetals

c. True. This can be explained by the very large difference in atomic radii between hydrogen and lithium.

d. False. Because the elements are in the same group, they have similar metallic qualities.

e. none of these

c. True. This can be explained by the very large difference in atomic radii between hydrogen and lithium.

Which elements have chemical properties determined by the valence-level s and p electrons?

a. actinides

b. lanthanides

c. representative elements

d. transition metals

e. none of these

d. transition metals

Which of the following is the second most abundant (by mass) element in the earth's crust, oceans, and atmosphere?

a. carbon

b. oxygen

c. silicon

d. hydrogen

e. aluminum

c. silicon

In a given period, this group has the element with the smallest atomic radius.

a. Group 2A

b. Group 3A

c. Group 1A

d. Group 7A

e. Group 8A

c. Group 1A

In a given period, this group has the element with the smallest ionization energy.

a. Group 3A

b. Group 7A

c. Group 8A

d. Group 2A

e. Group 1A

e. Group 1A

What is the most abundant (by mass) element found in the human body?

a. oxygen

b. carbon

c. calcium

d. hydrogen

e. water

a. oxygen

Hydrogen and lithium react very differently, although they are both members of Group 1. What is the primary reason for this difference?

a. Metallic character increases going down a group.

b. Electron affinity increases going down a group.

c. There is a very large difference between the atomic radii of H and Li.

d. Ionization energy increases going down a group.

e. Electronegativity increases going down a group.

c. There is a very large difference between the atomic radii of H and Li.

In which group are the elements listed in correct order of increasing first ionization energy?

a. Al > Si > P

b. Na > P > Cl

c. Cs > Na > K

d. K > Ca > Ge

e. Cs < Rb < Na

e. Cs < Rb < Na

Choose the element with the smallest radius.

a. Al(s)

b. K(s)

c. Mg(s)

d. Li(s)

e. In(s)

a. Al(s)

Which of the following oxides is amphoteric?

a. BeO

b. MgO

c. BaO

d. SrO

e. CaO

a. BeO

What reason is given for the stability of C⎯C, N⎯N, and O⎯O bonds, compared to the instability of Si⎯Si, P⎯P, and S⎯S bonds?

a. Their metallic character varies greatly.

b. There are large differences in their abilities to form strong pi bonds.

c. There are large differences in their ionization energies.

d. There are large differences in their electronegativities.

e. none of these

b. There are large differences in their abilities to form strong pi bonds.

Within a group, as the atomic numbers of the elements increase, the

a. elements become less metallic.

b. atomic radii decrease.

c. ionization energies decrease.

d. atomic masses decrease.

c. ionization energies decrease.

Which group contains the most active metals?

a. Group 2A

b. Group 3A

c. Group 1A

d. Group 4A

b. Group 3A

Choose the element with the smallest atomic radius.

a. Ra

b. Ca

c. Rb

d. K

e. Li

e. Li

Identify the true statement(s) of Group 8A elements.

1. The Group 8A elements have filled s and p valence orbitals.

2. The Group 8A elements are very reactive in nature.

3. The general electronic configuration of the Group 8A elements is ns 2 np6 , except for helium.

a. 1 only

b. 2 only

c. 3 only

d. 1 and 2

e. 1 and 3

e. 1 and 3

Which group contains two elements that exhibit +2 and +4 oxidation states?

a. Group 7A

b. Group 5A

c. Group 1A

d. Group 4A

e. Group 3A

d. Group 4A

Which of the following elements has the highest ionization energy?

a. Si

b. In

c. Tl

d. B

e. Ga

d. B (Boron)

Identify the true statement(s) of oxygen.

1. Oxygen molecules are paramagnetic in nature.

2. Ozone can be prepared by passing an electrical discharge through water.

3. Oxidizing power of ozone is greater than that of oxygen.

a. 3 only

b. 1 only

c. 1 and 2

d. 1 and 3

e. 2 and 3

d. 1 and 3

Choose the element with the highest melting point.
a. K

b. Cs

c. Rb

d. Na

e. Li

e. Li

Choose the only element that forms a regular oxide in the presence of an excess of oxygen gas.

a. Cs

b. Li

c. Na

d. Rb

e. K

b. Li

Choose the element whose ion has the largest concentration inside a human cell.

a. Li

b. Cs

c. Rb

d. K

e. Na

d. K

Which of the following has the highest melting point?

a. K(s)

b. Li(s)

c. Na(s)

d. Rb(s)

e. Cs(s)

b. Li(s)

Choose the group containing the most reactive nonmetals.

a. Group 3A

b. Group 1A

c. Group 5A

d. Group 8A

e. Group 7A

e. Group 7A

Identify the general valence electron configuration of the Group 5A elements.

a. ns ² np ³

b. ns ² nd³

c. ns ² np ⁴

d. ns ² nd²

e. ns ² np ⁶

a. ns ² np ³

Superoxides have the general formula

a. M₂O₂

b. MO

c. MO₂

d. M₂O

e. M₂O₃

c. MO₂

What ions are very important for the proper functioning of biologic systems, such as nerves and muscles?

a. alkaline earth metal ions

b. nitrogen ions

c. oxygen ions

d. alkali metal ions

e. sulfur ions

d. alkali metal ions

Within the halogen family, as atomic number increases,

a. melting point decreases.

b. ionic radius decreases.

c. covalent atomic radius increases

d. electronegativity increases.

c. covalent atomic radius increases

Which of the following metals has the highest melting point?

a. Al

b. Ca

c. K

d. Na

e. Mg

b. Ca

Choose the element with the smallest ionization energy.

a. Ba

b. Sr

c. Rb

d. Mg

e. Ca

c. Rb

Choose the species with the highest boiling point.

a. HCl

b. HBr

c. HI

d. HF

e. All are the same.

d. HF

Ionic hydrides are formed when hydrogen combines with elements from

I. Group 1A

II. Group 2A

III. Group 3A

a. I, II, and III

b. I and II only

c. II and III only

d. I and III only

e. none of these

b. I and II only

In response to environmental concerns, researchers have been seeking low-cost alternatives to fossil fuels. One such alternative is __________ , which can be liberated from water by using solar energy.

a. carbon

b. oxygen

c. hydrogen

d. ozone

e. none of these

c. hydrogen

Choose the metal that reacts least vigorously with water

a. Sr

b. Ba

c. Mg

d. Ca

e. All of these react equally vigorously with water

c. Mg

Choose the metal that is produced by electrolysis of its molten chloride salt.

a. Mg

b. Ca

c. Ba

d. Sr

e. all of these

e. all of these

What element is found in the structural minerals that make up our bones and teeth?

a. strontium

b. silicon

c. barium

d. calcium

e. magnesium

d. calcium

Which of the following ions interfere(s) with the action of detergents in hard water?

a. Ca²⁺

b. Na⁺

c. Mg²⁺

d. Na+ , Ca²⁺ , and Mg²⁺

e. Ca²⁺ and Mg²⁺

e. Ca²⁺ and Mg²⁺

What Group 6A element was discovered by Marie and Pierre Curie?

a. polonium

b. sulfur

c. oxygen

d. selenium

e. tellurium

a. polonium

What Group 6A elements are semiconductors?

a. selenium and polonium

b. sulfur and tellurium

c. sulfur and selenium

d. selenium and tellurium

e. tellurium and polonium

d. selenium and tellurium

Which of the following is best explained by the fact that the SO molecule is very unstable, whereas O₂ is stable

a. There exists much stronger π bonding between oxygen atoms than between a sulfur atom and an oxygen atom.

b. The S–O bond is inherently unstable.

c. The difference in electronegativity between the sulfur atom and the oxygen atom makes it unlikely for the S–O bond to form.

d. Sulfur lacks the ability to form double bonds.

e. none of these

a. There exists much stronger π bonding between oxygen atoms than between a sulfur atom and an oxygen atom.

Choose the species with the smallest radius.

a. F

b. Cl^–

c. Se

d. F^–

e. Cl

a. F

Choose the species with the largest bond strength.

a. I₂

b. Cl₂

c. F₂

d. Br₂

e. All are the same.

b. Cl₂

Which of the following elements has the widest liquid range?

a. B

b. Tl

c. Ga

d. Al

e. All are the same.

c. Ga

Which of the following elements is(are) found in bauxite?

a. Al

b. B

c. Ga

d. Tl

e. all of these

a. Al and c. Ga

The largest commercial use of lead is in

a. paints.

b. protective coatings for steel.

c. batteries used in automobiles.

d. semiconductors

e. gasoline.

c. batteries used in automobiles.

Which of the following is the most abundant metal on earth?

a. aluminum

b. copper

c. iron

d. zinc

e. calcium

a. aluminum

Order the following bonds from highest to lowest bond energy: carbon–carbon, silicon–silicon, silicon– oxygen.

a. C⎯C, Si⎯O, Si⎯Si

b. C⎯C, Si⎯Si, Si⎯O

c. Si⎯O, Si⎯Si, C⎯C

d. Si⎯Si, Si⎯O, C⎯C

e. Si⎯O, C⎯C, Si⎯Si

e. Si⎯O, C⎯C, Si⎯Si

Order the following compounds from lowest to highest boiling point: SnCl₄, SnBr₄, SnI₄.

a. SnI₄, SnBr₄, SnCl₄

b. SnCl₄, SnBr₄, SnI₄

c. SnBr₄, SnI₄, SnCl₄

d. SnCl₄, SnI₄, SnBr₄

e. SnI₄, SnCl₄, SnBr₄

b. SnCl₄, SnBr₄, SnI₄

Choose the element with the smallest electronegativity.

a. Sb

b. Cl

c. O

d. As

e. C

a. Sb

Choose the element with the smallest atomic radius.

a. N

b. Si

c. Sn

d. As

e. Pb

a. N

Choose the element with the smallest ionization energy.

a. P

b. C

c. As

d. Pb

e. Se

d. Pb

Nitrogen fixation

a. is used to produce nitric acid.

b. is used to manufacture ammonia.

c. transforms nitrogen to other nitrogen-containing compounds.

d. is used to recover sulfur from underground deposits.

e. none of these

c. transforms nitrogen to other nitrogen-containing compounds.

Which of the following is the oxidation state of nitrogen in nitrogen monoxide?

a. +3

b. +1

c. –1

d. –3

e. +2

e. +2

The ability of the Group 5A elements to form __________ greatly decreases after nitrogen.

a. molecules with four covalent bonds

b. larger molecules with single bonds

c. pi bonds

d. molecules with five covalent bonds

e. all of these

c. pi bonds

Pi bonding tends to be important in all elements of Group 5.

a. False

b. True

a. False

The Haber process

a. is used to recover sulfur from underground deposits.

b. transforms nitrogen to other nitrogen-containing compounds

c. is used to manufacture ammonia.

d. is used to produce nitric acid.

e. none of these

c. is used to manufacture ammonia.