Question 1

Consider the element with the electron configuration [Kr]5s24d105p5.This element is

Accepted Answer

A) a halogen. 
B) a transition metal. 
C) an alkali metal. 
D) an actinide element. 
E) a noble gas. 
A) a halogen. 
B) a transition metal. 
C) an alkali metal. 
D) an actinide element. 
E) a noble gas.

Question 2

An element with the electron configuration [noble gas]ns2(n - 1)d10np3 has ____________ valence electrons.

Accepted Answer

A) 2 
B) 3 
C) 5 
D) 10 
E) 15 
A) 2 
B) 3 
C) 5 
D) 10 
E) 15

Question 3

An element with the electron configuration [noble gas]ns2(n - 1)d8 has ___________ valence electrons.

Accepted Answer

A) 2 
B) 6 
C) 8 
D) 10 
E) None of these choices is correct. 
A) 2 
B) 6 
C) 8 
D) 10 
E) None of these choices is correct.

Question 4

Which of these choices is the electron configuration of the iron(III)ion?

Accepted Answer

A) [Ar]3d5 
B) [Ar]4s13d5 
C) [Ar]4s23d3 
D) [Ar]3d6 
E) [Ar]4s23d9 
A) [Ar]3d5 
B) [Ar]4s13d5 
C) [Ar]4s23d3 
D) [Ar]3d6 
E) [Ar]4s23d9

Question 5

A sulfide ion,S2-,has

Accepted Answer

A) 16 protons and 16 electrons. 
B) 32 protons and 16 electrons. 
C) 16 protons and 14 electrons. 
D) 16 protons and 18 electrons. 
E) 32 protons and 18 electrons. 
A) 16 protons and 16 electrons. 
B) 32 protons and 16 electrons. 
C) 16 protons and 14 electrons. 
D) 16 protons and 18 electrons. 
E) 32 protons and 18 electrons.

Question 6

___________ is the energy released when a single atom in the gas phase accepts an electron.

Accepted Answer

The answer of ___________ is the energy released when a...

Question 7

Which of these choices is the electron configuration for the chloride ion?

Accepted Answer

A) [Ne]3s23p4 
B) [Ne]3s23p7 
C) [Ar] 
D) [Ar]4s1 
E) [Ne]3s23p5 
A) [Ne]3s23p4 
B) [Ne]3s23p7 
C) [Ar] 
D) [Ar]4s1 
E) [Ne]3s23p5

Question 8

Explain why the trend in electron affinity increases in general as you move from left to right across a period
(row)of the periodic table.

Accepted Answer

The trend in electron affinity is due to

Question 9

Each of the noble gases has a completely filled p subshell except for which one?

Accepted Answer

A) Xenon 
B) Neon 
C) Radon 
D) Argon 
E) Helium 
A) Xenon 
B) Neon 
C) Radon 
D) Argon 
E) Helium

Question 10

The effective nuclear charge for an atom is less than the actual nuclear charge due to

Accepted Answer

A) shielding. 
B) penetration. 
C) paramagnetism. 
D) electron-pair repulsion. 
E) relativity. 
A) shielding. 
B) penetration. 
C) paramagnetism. 
D) electron-pair repulsion. 
E) relativity.

Question 11

Which one of these elements is a transition element?

Accepted Answer

A) Sr 
B) Pb 
C) As 
D) Fe 
E) H 
A) Sr 
B) Pb 
C) As 
D) Fe 
E) H

Question 12

Which of the following elements has the largest third ionization energy (IE3)?

Accepted Answer

A) Li 
B) B 
C) Ne 
D) Be 
E) Al 
A) Li 
B) B 
C) Ne 
D) Be 
E) Al

Question 13

Which of these elements has the highest first ionization energy?

Accepted Answer

A) Cs 
B) Ga 
C) K 
D) Bi 
E) As 
A) Cs 
B) Ga 
C) K 
D) Bi 
E) As

Question 14

What is the correct characteristic of nonmetals?

Accepted Answer

A) They have low electron affinities (so they commonly form anions). 
B) They have low ionization energies (so they commonly form cations). 
C) They form ionic compounds with chlorine (metal chlorides). 
D) They form basic,ionic compounds with oxygen (metal oxides). 
E) They have high electron affinities (so they commonly form anions). 
A) They have low electron affinities (so they commonly form anions). 
B) They have low ionization energies (so they commonly form cations). 
C) They form ionic compounds with chlorine (metal chlorides). 
D) They form basic,ionic compounds with oxygen (metal oxides). 
E) They have high electron affinities (so they commonly form anions).

Question 15

The electron configuration of a cobalt(III)ion is

Accepted Answer

A) [Ar]3d5. 
B) [Ar]4s13d5. 
C) [Ar]4s23d4. 
D) [Ar]3d6. 
E) [Ar]4s23d9. 
A) [Ar]3d5. 
B) [Ar]4s13d5. 
C) [Ar]4s23d4. 
D) [Ar]3d6. 
E) [Ar]4s23d9.

Question 16

Select the element with the least metallic character.

Accepted Answer

A) Sn 
B) Sr 
C) Tl 
D) Ge 
E) Ga 
A) Sn 
B) Sr 
C) Tl 
D) Ge 
E) Ga

Question 17

Which ground-state ion does not have an electron configuration described by the following orbital diagram? [Ar]
↿
↿
↿
↿
4s
3d
4s 3d

Accepted Answer

A) V+ 
B) Cr2+ 
C) Mn3+ 
D) Co5+ 
E) Fe4+ 
A) V+ 
B) Cr2+ 
C) Mn3+ 
D) Co5+ 
E) Fe4+

Question 18

In what groups are transition metals located?

Accepted Answer

A) 1A,7A,and 1B 
B) 2A,4A,and 7A 
C) 1B through 8B 
D) 2B and 3B through 6B 
E) 3A through 6A 
A) 1A,7A,and 1B 
B) 2A,4A,and 7A 
C) 1B through 8B 
D) 2B and 3B through 6B 
E) 3A through 6A

Question 19

Which of the following is a basic oxide?

Accepted Answer

A) P4O10 
B) MgO 
C) Al2O3 
D) SO2 
E) Cl2O7 
A) P4O10 
B) MgO 
C) Al2O3 
D) SO2 
E) Cl2O7

Question 20

Which one of these ions does not have [Xe] as its electronic configuration?

Accepted Answer

A) Te2- 
B) I- 
C) Cs+ 
D) Ba2+ 
E) Sn4+ 
A) Te2- 
B) I- 
C) Cs+ 
D) Ba2+ 
E) Sn4+

Exam 7: Electron Configuration and the Periodic Table

Consider the element with the electron configuration [Kr]5s24d105p5.This element is

An element with the electron configuration [noble gas]ns2(n - 1)d10np3 has ____________ valence electrons.

An element with the electron configuration [noble gas]ns2(n - 1)d8 has ___________ valence electrons.

Which of these choices is the electron configuration of the iron(III)ion?

A sulfide ion,S2-,has

___________ is the energy released when a single atom in the gas phase accepts an electron.

Which of these choices is the electron configuration for the chloride ion?

Explain why the trend in electron affinity increases in general as you move from left to right across a period (row)of the periodic table.

Each of the noble gases has a completely filled p subshell except for which one?

The effective nuclear charge for an atom is less than the actual nuclear charge due to

Which one of these elements is a transition element?

Which of the following elements has the largest third ionization energy (IE3)?

Which of these elements has the highest first ionization energy?

What is the correct characteristic of nonmetals?

The electron configuration of a cobalt(III)ion is

Select the element with the least metallic character.

Which ground-state ion does not have an electron configuration described by the following orbital diagram? [Ar] ↿ ↿ ↿ ↿ 4s 3d 4s 3d

In what groups are transition metals located?

Which of the following is a basic oxide?

Which one of these ions does not have [Xe] as its electronic configuration?

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

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

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Consider the element with the electron configuration [Kr]5s²4d¹⁰5p⁵.This element is

An element with the electron configuration [noble gas]ns²(n - 1)d¹⁰np³ has ____________ valence electrons.

An element with the electron configuration [noble gas]ns²(n - 1)d⁸ has ___________ valence electrons.

A sulfide ion,S^2-,has

Which of the following elements has the largest third ionization energy (IE₃)?