Question 1

The electron configuration of chlorine is 1s22s22p63s23p5. Which statement about chlorine is incorrect?

Accepted Answer

A) chlorine has five valence electrons 
B) chlorine's valence shell is the third shell 
C) chlorine has five electrons in the 3p subshell 
D) chlorine has 17 total electrons 
A) chlorine has five valence electrons 
B) chlorine's valence shell is the third shell 
C) chlorine has five electrons in the 3p subshell 
D) chlorine has 17 total electrons

Question 2

In the diagram below, which highlighted element is an f block element?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 3

All of the elements in group 6A are nonmetals.

Accepted Answer

A) True 
 B)False

Question 4

Iron-56 contains _____ neutrons.

Accepted Answer

The answer of Iron-56 contains _____ neutrons....

Question 5

Which element has the smallest ionization energy?

Accepted Answer

A) K 
B) Ga 
C) Br 
D) Rb 
A) K 
B) Ga 
C) Br 
D) Rb

Question 6

Which isotope is not possible?

Accepted Answer

A)    
B)    
C)    
D)    
E) More than one of the above isotopes is not possible. 
A)    
B)    
C)    
D)    
E) More than one of the above isotopes is not possible.

Question 7

Which statement is not part of the modern description of the electronic structure of an atom?

Accepted Answer

A) Electrons occupy discrete energy levels. 
B) Electrons move freely in space. 
C) The energy of electrons is quantized. 
D) The energy of electrons is restricted to specific values. 
A) Electrons occupy discrete energy levels. 
B) Electrons move freely in space. 
C) The energy of electrons is quantized. 
D) The energy of electrons is restricted to specific values.

Question 8

The electron-dot symbol for barium is   .

Accepted Answer

A) True 
 B)False

Question 9

Fluorine has higher ionization energy than neon.

Accepted Answer

A) True 
 B)False

Question 10

A compound is a pure substance formed by chemically combining two or more elements together.

Accepted Answer

A) True 
 B)False

Question 11

Protons and electrons reside in the nucleus of an atom.

Accepted Answer

A) True 
 B)False

Question 12

Hydrogen is located in group 1A but it is not considered an alkali metal.

Accepted Answer

A) True 
 B)False

Question 13

All atoms of the same element contain the same number of protons.

Accepted Answer

A) True 
 B)False

Question 14

Tungsten is a metal containing 74 protons that is widely used in the electronics industry. What is the elemental symbol for tungsten?

Accepted Answer

The answer of Tungsten is a metal containing 74 protons...

Question 15

Which element is a d block element?

Accepted Answer

A) S 
B) Ar 
C) Ag 
D) As 
E) None of these elements is a d block element. 
A) S 
B) Ar 
C) Ag 
D) As 
E) None of these elements is a d block element.

Question 16

Which element is chemically similar to lithium?

Accepted Answer

A) sulfur 
B) magnesium 
C) iron 
D) lanthanum 
E) potassium 
A) sulfur 
B) magnesium 
C) iron 
D) lanthanum 
E) potassium

Question 17

An alloy is a mixture of two or more elements that has metallic properties.

Accepted Answer

A) True 
 B)False

Question 18

A sulfur atom has a larger atomic radius than an oxygen atom. Which statement best explains why?

Accepted Answer

A) Sulfur contains more electrons than oxygen does. 
B) Sulfur contains more protons than oxygen does. 
C) The valence shell of sulfur is farther away from the nucleus than the valence shell of oxygen is. 
D) The larger number of protons in an oxygen atom pulls its electrons closer to the nucleus than a sulfur atom. 
A) Sulfur contains more electrons than oxygen does. 
B) Sulfur contains more protons than oxygen does. 
C) The valence shell of sulfur is farther away from the nucleus than the valence shell of oxygen is. 
D) The larger number of protons in an oxygen atom pulls its electrons closer to the nucleus than a sulfur atom.

Question 19

An iodine atom is larger than both a krypton atom and a tellurium atom.

Accepted Answer

A) True 
 B)False

Question 20

The farther a shell is from the nucleus, the larger its volume becomes, and the more electrons it can hold.

Accepted Answer

A) True 
 B)False

Exam 2: Atoms and the Periodic Table

The electron configuration of chlorine is 1s22s22p63s23p5. Which statement about chlorine is incorrect?

In the diagram below, which highlighted element is an f block element?

All of the elements in group 6A are nonmetals.

Iron-56 contains _____ neutrons.

Which element has the smallest ionization energy?

Which isotope is not possible?

Which statement is not part of the modern description of the electronic structure of an atom?

The electron-dot symbol for barium is .

Fluorine has higher ionization energy than neon.

A compound is a pure substance formed by chemically combining two or more elements together.

Protons and electrons reside in the nucleus of an atom.

Hydrogen is located in group 1A but it is not considered an alkali metal.

All atoms of the same element contain the same number of protons.

Tungsten is a metal containing 74 protons that is widely used in the electronics industry. What is the elemental symbol for tungsten?

Which element is a d block element?

Which element is chemically similar to lithium?

An alloy is a mixture of two or more elements that has metallic properties.

A sulfur atom has a larger atomic radius than an oxygen atom. Which statement best explains why?

An iodine atom is larger than both a krypton atom and a tellurium atom.

The farther a shell is from the nucleus, the larger its volume becomes, and the more electrons it can hold.

Matter and Measurement

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes, Reaction Rates, and Equilibrium

Gases, Liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen, Halogen, or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids, Esters, and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Digestion and the Conversion of Food Into Energy

Carbohydrate, Lipid, and Protein Metabolism

Filters

The electron configuration of chlorine is 1s²2s²2p⁶3s²3p⁵. Which statement about chlorine is incorrect?