Question 1

Which of the following elements is an actinide?

Accepted Answer

A)  Np 
B)  Pr 
C)  W 
D)  Fr 
A)  Np 
B)  Pr 
C)  W 
D)  Fr

Question 2

How many neutrons does the nucleus of the phosphorus-32 isotope have?

Accepted Answer

A)  15 
B)  16 
C)  17 
D)  32 
A)  15 
B)  16 
C)  17 
D)  32

Question 3

Which of the following is not a main group element?

Accepted Answer

A)  S 
B)  As 
C)  Cu 
D)  Xe 
A)  S 
B)  As 
C)  Cu 
D)  Xe

Question 4

What is the mass of the single product that is formed from the complete reaction of 2.5 g hydrogen with 7.5 g oxygen?

Accepted Answer

A)  5.0 g 
B)  7.5 g 
C)  9.5 g 
D)  10.0 g 
A)  5.0 g 
B)  7.5 g 
C)  9.5 g 
D)  10.0 g

Question 5

What name is commonly given to the elements of Group IA of the periodic table?

Accepted Answer

A)  alkaline earth metals 
B)  transition metals 
C)  platinum metals 
D)  alkali metals 
A)  alkaline earth metals 
B)  transition metals 
C)  platinum metals 
D)  alkali metals

Question 6

Which of the following is the correct symbolic representation of the lead-209 isotope?

Accepted Answer

A)    Li 
B)    Pb 
C)    Pb 
D)    Pb 
A)    Li 
B)    Pb 
C)    Pb 
D)    Pb

Question 7

Which species has 16 protons, 18 neutrons and 18 electrons?

Accepted Answer

A)  "34S2+" 
B)  "34S2-" 
C)  "36Ar2+" 
D)  "36Se2-" 
A)  "34S2+" 
B)  "34S2-" 
C)  "36Ar2+" 
D)  "36Se2-"

Question 8

Which of the following is a metalloid in the third period of the periodic table?

Accepted Answer

A)  Al 
B)  Si 
C)  P 
D)  S 
A)  Al 
B)  Si 
C)  P 
D)  S

Question 9

Which of the following has the highest ionization energy?

Accepted Answer

A)  O 
B)  Sn 
C)  As 
D)  C 
A)  O 
B)  Sn 
C)  As 
D)  C

Question 10

The oxygen-17 isotope has more protons than neutrons in its nucleus.

Accepted Answer

A) True 
 B)False

Question 11

Which ion contains 18 electrons?

Accepted Answer

A)  Ca+ 
B)  CL₂- 
C)  Ar- 
D)  P3- 
A)  Ca+ 
B)  CL₂- 
C)  Ar- 
D)  P3-

Question 12

The periodic table contains more elements that are classified as non-metals than elements of any other type.

Accepted Answer

A) True 
 B)False

Question 13

Which cation has the atomic number of 20 and a charge of +2?

Accepted Answer

A)  C₂+ 
B)  Mg2+ 
C)  Ca₂+ 
D)  S2+ 
A)  C₂+ 
B)  Mg2+ 
C)  Ca₂+ 
D)  S2+

Question 14

Which of the following elements can have an anion with 18 electrons?

Accepted Answer

A)  Cl 
B)  Ar 
C)  Sc 
D)  Fe 
A)  Cl 
B)  Ar 
C)  Sc 
D)  Fe

Question 15

One needs to supply energy from an outside source to form a cation from a neutral atom.

Accepted Answer

A) True 
 B)False

Question 16

Each element is defined by its atomic number.

Accepted Answer

A) True 
 B)False

Question 17

Identify X in the expression   X.

Accepted Answer

A)  selenium 
B)  copper 
C)  cobalt 
D)  cesium 
E)  manganese 
A)  selenium 
B)  copper 
C)  cobalt 
D)  cesium 
E)  manganese

Question 18

Which of the following has more protons than electrons?

Accepted Answer

A)  Mg2+ 
B)  Al 
C)  P3- 
D)  O₂- 
A)  Mg2+ 
B)  Al 
C)  P3- 
D)  O₂-

Question 19

How is the term "mass number" defined for a given atom or isotope?

Accepted Answer

A)  as the mass of one mole of that element or isotope 
B)  as the sum of the number of protons, neutrons, and electrons 
C)  as the sum of the number of protons and neutrons in the nucleus 
D)  as the number of protons in the nucleus 
A)  as the mass of one mole of that element or isotope 
B)  as the sum of the number of protons, neutrons, and electrons 
C)  as the sum of the number of protons and neutrons in the nucleus 
D)  as the number of protons in the nucleus

Question 20

Which of the following elements is a chalcogen?

Accepted Answer

A)  H 
B)  N 
C)  O 
D)  F 
A)  H 
B)  N 
C)  O 
D)  F

Which of the following elements is an actinide?

How many neutrons does the nucleus of the phosphorus-32 isotope have?

Which of the following is not a main group element?

What is the mass of the single product that is formed from the complete reaction of 2.5 g hydrogen with 7.5 g oxygen?

What name is commonly given to the elements of Group IA of the periodic table?

Which of the following is the correct symbolic representation of the lead-209 isotope?

Which species has 16 protons, 18 neutrons and 18 electrons?

Which of the following is a metalloid in the third period of the periodic table?

Which of the following has the highest ionization energy?

The oxygen-17 isotope has more protons than neutrons in its nucleus.

Which ion contains 18 electrons?

The periodic table contains more elements that are classified as non-metals than elements of any other type.

Which cation has the atomic number of 20 and a charge of +2?

Which of the following elements can have an anion with 18 electrons?

One needs to supply energy from an outside source to form a cation from a neutral atom.

Each element is defined by its atomic number.

Identify X in the expression X.

Which of the following has more protons than electrons?

How is the term "mass number" defined for a given atom or isotope?

Which of the following elements is a chalcogen?

What Is Chemistry

The Numerical Side of Chemistry

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 3: The Evolution of Atomic Theory

Which of the following elements is an actinide?

How many neutrons does the nucleus of the phosphorus-32 isotope have?

Which of the following is not a main group element?

What is the mass of the single product that is formed from the complete reaction of 2.5 g hydrogen with 7.5 g oxygen?

What name is commonly given to the elements of Group IA of the periodic table?

Which of the following is the correct symbolic representation of the lead-209 isotope?

Which species has 16 protons, 18 neutrons and 18 electrons?

Which of the following is a metalloid in the third period of the periodic table?

Which of the following has the highest ionization energy?

The oxygen-17 isotope has more protons than neutrons in its nucleus.

Which ion contains 18 electrons?

The periodic table contains more elements that are classified as non-metals than elements of any other type.

Which cation has the atomic number of 20 and a charge of +2?

Which of the following elements can have an anion with 18 electrons?

One needs to supply energy from an outside source to form a cation from a neutral atom.

Each element is defined by its atomic number.

Identify X in the expression X.

Which of the following has more protons than electrons?

How is the term "mass number" defined for a given atom or isotope?

Which of the following elements is a chalcogen?

What Is Chemistry

The Numerical Side of Chemistry

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

Electron Transfer in Chemical Reactions

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters