Question 1

Concerning the electron configuration of P, 1s22s22p63s23p4, write the configuration for the valence shell electrons only

Accepted Answer

Question 2

Which ion is isoelectronic with Ar?

Accepted Answer

A) Fe2+ 
B) F- 
C) Br- 
D) Ga3+ 
E) Ca2+ 
A) Fe2+ 
B) F- 
C) Br- 
D) Ga3+ 
E) Ca2+

Question 3

Which of the following is the general electron configuration for the outermost electrons of elements in the alkaline earth group?

Accepted Answer

A) ns1 
B) ns2 
C) ns2np4 
D) ns2np5 
E) ns2np6(n -1)d6 
A) ns1 
B) ns2 
C) ns2np4 
D) ns2np5 
E) ns2np6(n -1)d6

Question 4

Which one of the following elements is a transition element?

Accepted Answer

A) antimony 
B) barium 
C) chromium 
D) potassium 
E) selenium 
A) antimony 
B) barium 
C) chromium 
D) potassium 
E) selenium

Question 5

In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s24d105p2?

Accepted Answer

A) row 4, group 4A 
B) row 4, group 5A 
C) row 5, group 4A 
D) row 5, group 5A 
E) none of the above 
A) row 4, group 4A 
B) row 4, group 5A 
C) row 5, group 4A 
D) row 5, group 5A 
E) none of the above

Question 6

How many electrons does a nitrogen atom need to fill its outermost s and p subshells?

Accepted Answer

A) 5 
B) 3 
C) 1 
D) 8 
E) 0 
A) 5 
B) 3 
C) 1 
D) 8 
E) 0

Question 7

How many electrons are in the 4p subshell of selenium?

Accepted Answer

A) 0 
B) 2 
C) 4 
D) 5 
E) 6 
A) 0 
B) 2 
C) 4 
D) 5 
E) 6

Question 8

Arrange the following ions in order of increasing ionic radius: K+, P3- , S2-, Cl-. increasing radius $\rarr$

Accepted Answer

A) K+ - 2- 3- 
B) K+ 3- 2- - 
C) P3- 2- - + 
D) Cl- 2- 3- + 
E) Cl- 2- + 3- 
A) K+ - 2- 3- 
B) K+ 3- 2- - 
C) P3- 2- - + 
D) Cl- 2- 3- + 
E) Cl- 2- + 3-

Question 9

Which of the following is a basic oxide?

Accepted Answer

A) NO2 
B) H2O 
C) Na2O 
D) SnO 
E) SO2 
A) NO2 
B) H2O 
C) Na2O 
D) SnO 
E) SO2

Question 10

Which of the following is the electron configuration of a sulfide ion?

Accepted Answer

A) [Ne]3s23p4 
B) [Ne] 
C) [Ne]3s23p1 
D) [Ar] 
E) [Ne]3s23p2 
A) [Ne]3s23p4 
B) [Ne] 
C) [Ne]3s23p1 
D) [Ar] 
E) [Ne]3s23p2

Question 11

The cobalt(III)ion, Co3+, has how many 3d electrons?

Accepted Answer

A) 0 
B) 7 
C) 6 
D) 5 
E) 4 
A) 0 
B) 7 
C) 6 
D) 5 
E) 4

Question 12

Consider the following reaction 2A + 3F2 $\rarr$2AF3.What is a reasonable guess for the identity element A?

Accepted Answer

Aluminum, or other e

Question 13

Mendeleev proposed the existence of an unknown element that he called eka-aluminum.This element is now called

Accepted Answer

A) gallium. 
B) silicon. 
C) magnesium. 
D) boron. 
E) germanium. 
A) gallium. 
B) silicon. 
C) magnesium. 
D) boron. 
E) germanium.

Question 14

Which of the following elements behaves chemically similarly to potassium?

Accepted Answer

A) magnesium 
B) sodium 
C) beryllium 
D) chlorine 
E) iron 
A) magnesium 
B) sodium 
C) beryllium 
D) chlorine 
E) iron

Question 15

Which of the following elements has the smallest ionization energy?

Accepted Answer

A) Li 
B) Na 
C) Be 
D) K 
E) Rb 
A) Li 
B) Na 
C) Be 
D) K 
E) Rb

Question 16

The chief contribution of physicist Henry Moseley to atomic theory was

Accepted Answer

A) the discovery of the periodic law. 
B) the determination of the charge of the proton. 
C) the measurement of the atomic numbers of the elements. 
D) the scientist who determined the electric charge of the electron. 
E) the discovery of the law of octaves. 
A) the discovery of the periodic law. 
B) the determination of the charge of the proton. 
C) the measurement of the atomic numbers of the elements. 
D) the scientist who determined the electric charge of the electron. 
E) the discovery of the law of octaves.

Question 17

Which of the following elements behaves chemically similarly to oxygen?

Accepted Answer

A) magnesium 
B) sodium 
C) sulfur 
D) chlorine 
E) iron
F)beryllium 
A) magnesium 
B) sodium 
C) sulfur 
D) chlorine 
E) iron
F)beryllium

Question 18

Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide.

Accepted Answer

A) acidic 
B) ionic 
C) amphoteric 
D) neutral 
E) basic 
A) acidic 
B) ionic 
C) amphoteric 
D) neutral 
E) basic

Question 19

For phosphorus atoms, which ionization energy will show an exceptionally large increase over the previous ionization energy?

Accepted Answer

A) 2nd 
B) 3rd 
C) 4th 
D) 5th 
E) 6th 
A) 2nd 
B) 3rd 
C) 4th 
D) 5th 
E) 6th

Question 20

The law of octaves states that every eighth element has similar properties when arranged in order of increasing

Accepted Answer

A) nuclear binding energy. 
B) number of electrons. 
C) number of neutrons. 
D) atomic mass. 
E) atomic number. 
A) nuclear binding energy. 
B) number of electrons. 
C) number of neutrons. 
D) atomic mass. 
E) atomic number.

Exam 8: Periodic Relationships Among the Elements

Concerning the electron configuration of P, 1s22s22p63s23p4, write the configuration for the valence shell electrons only

Which ion is isoelectronic with Ar?

Which of the following is the general electron configuration for the outermost electrons of elements in the alkaline earth group?

Which one of the following elements is a transition element?

In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s24d105p2?

How many electrons does a nitrogen atom need to fill its outermost s and p subshells?

How many electrons are in the 4p subshell of selenium?

Arrange the following ions in order of increasing ionic radius: K+, P3- , S2-, Cl-. increasing radius →\rarr→

Which of the following is a basic oxide?

Which of the following is the electron configuration of a sulfide ion?

The cobalt(III)ion, Co3+, has how many 3d electrons?

Consider the following reaction 2A + 3F2 →\rarr→ 2AF3.What is a reasonable guess for the identity element A?

Mendeleev proposed the existence of an unknown element that he called eka-aluminum.This element is now called

Which of the following elements behaves chemically similarly to potassium?

Which of the following elements has the smallest ionization energy?

The chief contribution of physicist Henry Moseley to atomic theory was

Which of the following elements behaves chemically similarly to oxygen?

Since arsenic is a nonmetal, As2O3 is expected to be a/an _____ oxide.

For phosphorus atoms, which ionization energy will show an exceptionally large increase over the previous ionization energy?

The law of octaves states that every eighth element has similar properties when arranged in order of increasing

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

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

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Concerning the electron configuration of P, 1s²2s²2p⁶3s²3p⁴, write the configuration for the valence shell electrons only

In what row and group of the periodic table would you find the element with the electron configuration [Kr]5s²4d¹⁰5p²?

Arrange the following ions in order of increasing ionic radius: K⁺, P^3-, S^2-, Cl^-. increasing radius $\rarr$

The cobalt(III)ion, Co³⁺, has how many 3d electrons?

Consider the following reaction 2A + 3F₂ $\rarr$ 2AF₃.What is a reasonable guess for the identity element A?

Since arsenic is a nonmetal, As₂O₃ is expected to be a/an _____ oxide.