Question 1

Write a balanced reaction between magnesium metal and hydrochloric acid.

Accepted Answer

Mg (s)+ 2H

Question 2

Which of the following elements can exist as an allotrope?

Accepted Answer

A) iron 
B) carbon 
C) silver 
D) silicon 
E) neon 
A) iron 
B) carbon 
C) silver 
D) silicon 
E) neon

Question 3

Xenon can form compounds with fluorine.

Accepted Answer

A) True 
 B)False

Question 4

The effective nuclear charge in an atom is proportional to the number of nuclear protons.

Accepted Answer

A) True 
 B)False

Question 5

When two elements combine to form a compound,the ________ the difference in metallic character between the two elements,the ________ the likelihood that the compound will be a ________ at room temperature.

Accepted Answer

A) smaller, greater, solid 
B) greater, greater, liquid 
C) greater, greater, solid 
D) smaller, greater, liquid 
E) greater, smaller, solid 
A) smaller, greater, solid 
B) greater, greater, liquid 
C) greater, greater, solid 
D) smaller, greater, liquid 
E) greater, smaller, solid

Question 6

The ion with the smallest diameter is ________.

Accepted Answer

A) Li+ 
B) Na+ 
C) K+ 
D) Rb+ 
E) Cs+ 
A) Li+ 
B) Na+ 
C) K+ 
D) Rb+ 
E) Cs+

Question 7

________ is isoelectronic with scandium.

Accepted Answer

A) Cr3+ 
B) Mn5+ 
C) Mn 
D) Mn4- 
E) K+ 
A) Cr3+ 
B) Mn5+ 
C) Mn 
D) Mn4- 
E) K+

Question 8

Ozone is a a(n)________ of oxygen.

Accepted Answer

A) isotope 
B) allotrope 
C) precursor 
D) peroxide 
E) free radical 
A) isotope 
B) allotrope 
C) precursor 
D) peroxide 
E) free radical

Question 9

Element M reacts with chlorine to form a compound with the formula MCl2.Element M is more reactive than magnesium and has a smaller radius than barium.This element is ________.

Accepted Answer

A) Sr 
B) K 
C) Na 
D) Ra 
E) Be 
A) Sr 
B) K 
C) Na 
D) Ra 
E) Be

Question 10

The alkali metal that is naturally radioactive is ________.

Accepted Answer

A) rubidium 
B) cesium 
C) lithium 
D) francium 
E) sodium 
A) rubidium 
B) cesium 
C) lithium 
D) francium 
E) sodium

Question 11

Alkali metals tend to be more reactive than alkaline earth metals because ________.

Accepted Answer

A) alkali metals have lower densities 
B) alkali metals have lower melting points 
C) alkali metals have greater electron affinities 
D) alkali metals have lower ionization energies 
E) Alkali metals are not more reactive than alkaline earth metals. 
A) alkali metals have lower densities 
B) alkali metals have lower melting points 
C) alkali metals have greater electron affinities 
D) alkali metals have lower ionization energies 
E) Alkali metals are not more reactive than alkaline earth metals.

Question 12

Consider the general valence electron configuration of ns2np5 and the following statements: (i)Elements with this electron configuration are expected to form -1 anions.
(ii)Elements with this electron configuration are expected to have large positive electron affinities.
(iii)Elements with this electron configuration are nonmetals.
(iv)Elements with this electron configuration form acidic oxides.
Which statements are true?

Accepted Answer

A) (i)and (ii) 
B) (i), (ii), and (iii) 
C) (ii)and (iii) 
D) (i), (iii,)and (iv) 
E) All statements are true. 
A) (i)and (ii) 
B) (i), (ii), and (iii) 
C) (ii)and (iii) 
D) (i), (iii,)and (iv) 
E) All statements are true.

Question 13

Which of the following noble gases is not reactive?

Accepted Answer

A) xenon and argon 
B) helium and neon 
C) xenon only 
D) xenon, krypton, and argon 
E) None of the above are reactive 
A) xenon and argon 
B) helium and neon 
C) xenon only 
D) xenon, krypton, and argon 
E) None of the above are reactive

Question 14

Electron affinity measures how easily an atom gains an electron.

Accepted Answer

A) True 
 B)False

Question 15

Which element is solid at room temperature?

Accepted Answer

A) Cl2 
B) F2 
C) Br2 
D) I2 
E) H2 
A) Cl2 
B) F2 
C) Br2 
D) I2 
E) H2

Question 16

Which one of the following is a metalloid?

Accepted Answer

A) Si 
B) S 
C) Cl 
D) In 
E) Li 
A) Si 
B) S 
C) Cl 
D) In 
E) Li

Question 17

All of the following reactions concerning alkali metals are correct except ________.

Accepted Answer

A) 2Na (s)+ 2H2O (l)→ 2NaOH (aq)+ H2 (g) 
B) Na (s)+ O2 (g)→ NaO2 (s) 
C) 2Na (s)+ H2 (g)→ 2NaH (s) 
D) 2Na (s)+ S (s)→ Na2S (s) 
E) 2Na (s)+ Cl2 (g)→ 2NaCl (s) 
A) 2Na (s)+ 2H2O (l)→ 2NaOH (aq)+ H2 (g) 
B) Na (s)+ O2 (g)→ NaO2 (s) 
C) 2Na (s)+ H2 (g)→ 2NaH (s) 
D) 2Na (s)+ S (s)→ Na2S (s) 
E) 2Na (s)+ Cl2 (g)→ 2NaCl (s)

Question 18

Which of the following correctly represents the second ionization of calcium?

Accepted Answer

A) Ca (g)→ Ca+ (g)+ e- 
B) Ca+ (g)→ Ca2+ (g)+ e- 
C) Ca- (g)+ e- → Ca2- (g) 
D) Ca+ (g)+ e- → Ca2+ (g) 
E) Ca+ (g)+ e- → Ca (g) 
A) Ca (g)→ Ca+ (g)+ e- 
B) Ca+ (g)→ Ca2+ (g)+ e- 
C) Ca- (g)+ e- → Ca2- (g) 
D) Ca+ (g)+ e- → Ca2+ (g) 
E) Ca+ (g)+ e- → Ca (g)

Question 19

All of the following noble gases have a ns2np6 valence electron configuration except ________.

Accepted Answer

A) helium 
B) radon 
C) neon 
D) krypton 
E) All noble gases have the ns2np6 valence electron configuration. 
A) helium 
B) radon 
C) neon 
D) krypton 
E) All noble gases have the ns2np6 valence electron configuration.

Question 20

Which one of the following is not true about the alkali metals?

Accepted Answer

A) They are low density solids at room temperature. 
B) They all readily form ions with a +1 charge. 
C) They all have 2 electrons in their valence shells. 
D) They are very reactive elements. 
E) They have the lowest first ionization energies of the elements. 
A) They are low density solids at room temperature. 
B) They all readily form ions with a +1 charge. 
C) They all have 2 electrons in their valence shells. 
D) They are very reactive elements. 
E) They have the lowest first ionization energies of the elements.

Exam 7: Periodic Properties of the Elements

Write a balanced reaction between magnesium metal and hydrochloric acid.

Which of the following elements can exist as an allotrope?

Xenon can form compounds with fluorine.

The effective nuclear charge in an atom is proportional to the number of nuclear protons.

When two elements combine to form a compound,the ________ the difference in metallic character between the two elements,the ________ the likelihood that the compound will be a ________ at room temperature.

The ion with the smallest diameter is ________.

________ is isoelectronic with scandium.

Ozone is a a(n)________ of oxygen.

Element M reacts with chlorine to form a compound with the formula MCl2.Element M is more reactive than magnesium and has a smaller radius than barium.This element is ________.

The alkali metal that is naturally radioactive is ________.

Alkali metals tend to be more reactive than alkaline earth metals because ________.

Which of the following noble gases is not reactive?

Electron affinity measures how easily an atom gains an electron.

Which element is solid at room temperature?

Which one of the following is a metalloid?

All of the following reactions concerning alkali metals are correct except ________.

Which of the following correctly represents the second ionization of calcium?

All of the following noble gases have a ns2np6 valence electron configuration except ________.

Which one of the following is not true about the alkali metals?

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Thermochemistry

Electronic Structure of Atoms

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

When two elements combine to form a compound,the the difference in metallic character between the two elements,the the likelihood that the compound will be a at room temperature.

Element M reacts with chlorine to form a compound with the formula MCl₂.Element M is more reactive than magnesium and has a smaller radius than barium.This element is ________.

All of the following noble gases have a ns²np⁶ valence electron configuration except ________.