Question 1

P4O6 and P4O10 are allotropes of phosphorus.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following has the most allotropes?

Accepted Answer

A) Carbon 
B) Sulfur 
C) Oxygen 
D) Selenium 
E) Nitrogen 
A) Carbon 
B) Sulfur 
C) Oxygen 
D) Selenium 
E) Nitrogen

Question 3

Which of these is a polar covalent bond?

Accepted Answer

A) Na-Cl 
B) Br-Br 
C) P-Cl 
D) All of the choices are polar covalent bonds. 
E) None of these choices is a polar covalent bond. 
A) Na-Cl 
B) Br-Br 
C) P-Cl 
D) All of the choices are polar covalent bonds. 
E) None of these choices is a polar covalent bond.

Question 4

Air is made up of approximately 80% of which of the following?

Accepted Answer

A) Hydrogen 
B) Nitrogen 
C) Carbon 
D) Oxygen 
E) Helium 
A) Hydrogen 
B) Nitrogen 
C) Carbon 
D) Oxygen 
E) Helium

Question 5

How many valence electrons does a carbon atom have?

Accepted Answer

A) 2 
B) 1 
C) 6 
D) 3 
E) 4 
A) 2 
B) 1 
C) 6 
D) 3 
E) 4

Question 6

What is the charge on the monatomic ion of nitrogen,the nitride ion?

Accepted Answer

A) -3 
B) +2 
C) -1 
D) -2 
E) +1 
A) -3 
B) +2 
C) -1 
D) -2 
E) +1

Question 7

The chemical formula for the superoxide ion is

Accepted Answer

A) O-. 
B) O22-. 
C) O2-. 
D) O3-. 
E) O2-. 
A) O-. 
B) O22-. 
C) O2-. 
D) O3-. 
E) O2-.

Question 8

Which of these elements is the most abundant in the universe?

Accepted Answer

A) Hydrogen 
B) Nitrogen 
C) Carbon 
D) Oxygen 
E) Sodium 
A) Hydrogen 
B) Nitrogen 
C) Carbon 
D) Oxygen 
E) Sodium

Question 9

The halogens act as oxidizing agents in most of their reactions.

Accepted Answer

A) True 
 B)False

Question 10

Ozone (O3)and oxygen gas (O2)are examples of

Accepted Answer

A) isotopes. 
B) allotropes. 
C) polymorphs. 
D) alloys. 
E) amphoterism. 
A) isotopes. 
B) allotropes. 
C) polymorphs. 
D) alloys. 
E) amphoterism.

Question 11

Which halogen does not form compounds with both positive and negative oxidation states?

Accepted Answer

A) Chlorine 
B) Fluorine 
C) Iodine 
D) Bromine 
E) Astatine 
A) Chlorine 
B) Fluorine 
C) Iodine 
D) Bromine 
E) Astatine

Question 12

What name is given to a compound containing hydrogen and a metal or hydrogen and a nonmetal?

Accepted Answer

The answer of What name is given to a compound...

Question 13

What process involves the addition of a hydrogen molecule to compounds containing multiple bonds?

Accepted Answer

A) Hydration 
B) Alkanation 
C) Hydrogenation 
D) Esterification 
E) Coagulation 
A) Hydration 
B) Alkanation 
C) Hydrogenation 
D) Esterification 
E) Coagulation

Question 14

Which of these elements is a liquid at room temperature?

Accepted Answer

A) Hydrogen 
B) Nitrogen 
C) Bromine 
D) Sulfur 
E) Phosphorus 
A) Hydrogen 
B) Nitrogen 
C) Bromine 
D) Sulfur 
E) Phosphorus

Question 15

The acidity of oxides of main group elements increases across a period from left to right.

Accepted Answer

A) True 
 B)False

Question 16

The electron dot formula for molecular oxygen has

Accepted Answer

A) a single covalent bond. 
B) an ionic bond. 
C) a double covalent bond. 
D) a total of 8 × 2 = 16 electron dots. 
E) a total of 8 × 4 = 32 electron dots. 
A) a single covalent bond. 
B) an ionic bond. 
C) a double covalent bond. 
D) a total of 8 × 2 = 16 electron dots. 
E) a total of 8 × 4 = 32 electron dots.

Question 17

What type of bond is the C - Cl bond in CCl4?

Accepted Answer

A) Nonpolar covalent 
B) Ionic 
C) Polar covalent 
D) Polar ionic 
E) Coordinate covalent 
A) Nonpolar covalent 
B) Ionic 
C) Polar covalent 
D) Polar ionic 
E) Coordinate covalent

Question 18

Which is NOT true concerning sulfur?

Accepted Answer

A) Sulfur reacts with carbon to form a flammable liquid. 
B) Sulfur reacts with fluorine to form an inert compound. 
C) Sulfur reacts with oxygen to form a strongly acid oxide. 
D) Sulfur reacts with hydrogen to form a pungent,foul-smelling gas. 
E) In its solid elemental form,sulfur exists as an eight-membered ring. 
A) Sulfur reacts with carbon to form a flammable liquid. 
B) Sulfur reacts with fluorine to form an inert compound. 
C) Sulfur reacts with oxygen to form a strongly acid oxide. 
D) Sulfur reacts with hydrogen to form a pungent,foul-smelling gas. 
E) In its solid elemental form,sulfur exists as an eight-membered ring.

Question 19

What is the formal charge on sulfur in the best Lewis structure for the SCN-?

Accepted Answer

A) +2 
B) -2 
C) -1 
D) +1 
E) 0 
A) +2 
B) -2 
C) -1 
D) +1 
E) 0

Exam 24: Nonmetallic Elements and Their Compounds

P4O6 and P4O10 are allotropes of phosphorus.

Which of the following has the most allotropes?

Which of these is a polar covalent bond?

Air is made up of approximately 80% of which of the following?

How many valence electrons does a carbon atom have?

What is the charge on the monatomic ion of nitrogen,the nitride ion?

The chemical formula for the superoxide ion is

Which of these elements is the most abundant in the universe?

The halogens act as oxidizing agents in most of their reactions.

Ozone (O3)and oxygen gas (O2)are examples of

Which halogen does not form compounds with both positive and negative oxidation states?

What name is given to a compound containing hydrogen and a metal or hydrogen and a nonmetal?

What process involves the addition of a hydrogen molecule to compounds containing multiple bonds?

Which of these elements is a liquid at room temperature?

The acidity of oxides of main group elements increases across a period from left to right.

The electron dot formula for molecular oxygen has

What type of bond is the C - Cl bond in CCl4?

Which is NOT true concerning sulfur?

What is the formal charge on sulfur in the best Lewis structure for the SCN-?

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Organic Chemistry

Filters

P₄O₆ and P₄O₁₀ are allotropes of phosphorus.

Ozone (O₃)and oxygen gas (O₂)are examples of

What type of bond is the C - Cl bond in CCl₄?

What is the formal charge on sulfur in the best Lewis structure for the SCN^-?