Question 1

Which of the following is not a metal?

Accepted Answer

A) Ba. 
B) Br. 
C) Ga. 
D) Al. 
E) Hg.

Question 2

Write the ground-state electron configuration of a terbium atom.

Accepted Answer

A) [Xe]4f11  
B) [Xe]4f106s1  
C) [Xe]4f96s2  
D) [Xe]4f45d56s2  
E) [Xe]4f65d5

Question 3

Which of the following pairs of elements has members with similar properties?

Accepted Answer

A) Mg and Al 
B) Li and Be 
C) Mg and Ge 
D) Na and Ca 
E) None of the above.

Question 4

Write the ground-state electron configuration of Tl+.

Accepted Answer

A) [Xe]4f145d106p2  
B) [Xe]4f145d106s2  
C) [Xe]4f145d106s16p1  
D) [Xe]4f145d86s16p3  
E) [Xe]4f145d56s16p6

Question 5

What is the ground-state electron configuration of Nb?

Accepted Answer

A) [Kr]4d45s1  
B) [Kr]4d55s2  
C) [Kr]5d34s2  
D) [Kr]5d35s2  
E) [Kr]4d35s2

Question 6

Which of the following atoms has the highest electron affinity?

Accepted Answer

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

Question 7

How many unpaired electrons are in a calcium atom?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 8

From the data below,which element is likely to be a metal?

Accepted Answer

A) 2 
B) 5 
C) 3 
D) 1 
E) 4

Question 9

Which of the following atoms or ions is isoelectronic with Be2+?

Accepted Answer

A) Na+  
B) Br-  
C) He 
D) Xe 
E) He+

Question 10

Given the elements Cl,Ge,and K and three values of possible first ionization energies,418,1255,784 kJ.mol-1,match the atoms with their first ionization energies.

Accepted Answer

A) Cl (418),Ge (784),and K (1255 kJ.mol-1) 
B) Cl (1255),Ge (784),and K (418 kJ.mol-1) 
C) Cl (784),Ge (1255),and K (418 kJ.mol-1) 
D) Cl (1255),Ge (418),and K (784 kJ.mol-1) 
E) Cl (418),Ge (1255),and K (784 kJ.mol-1)

Question 11

Consider the following ground-state electronic configurations.Which atom has the lowest first ionization energy?

Accepted Answer

A) [Ne] 3s23p5 
B) [Ne] 3s23p3 
C) [Ne] 3s23p1 
D) [Ne] 3s23p4

Question 12

Which of the following would be most reactive with air and water?

Accepted Answer

A) Ba 
B) Mg 
C) Ga 
D) Br

Question 13

What are the possibilities of the spin quantum number for Mg?

Accepted Answer

A) ms = 1 
B) ms = 0 
C) ms = + ½ 
D) ms = - ½ 
E) Both C and D

Question 14

Which of the following has the largest atomic radius?

Accepted Answer

A) S2-  
B) Cl 
C) Cl-  
D) K+  
E) S

Question 15

What is the only secondary quantum number associated with the 4s orbital?

Accepted Answer

A) l = 0 
B) l = 1 
C) l = 2 
D) l = 3 
E) l = 4

Question 16

Which of the following has the smallest radius?

Accepted Answer

A) P+5 
B) P3- 
C) N+5 
D) N 
E) N3−

Question 17

Which of the following has similar properties to Al?

Accepted Answer

A) Li 
B) Be 
C) Si 
D) Ga 
E) Mg

Question 18

Write the ground-state electron configuration of Sb3+.

Accepted Answer

A) [Kr]4d85s15p3  
B) [Kr]4d55s15p6  
C) [Kr]4d105p2  
D) [Kr]4d105s15p1  
E) [Kr]4d105s2

Question 19

How many unpaired electrons exist in the ground state of a Cu+ ion?

Accepted Answer

A) 0 
B) 2 
C) 1 
D) 3 
E) 5

Question 20

The three quantum numbers for an electron in a hydrogen atom in a certain state are n = 4,l = 1,ml = 1.The electron is located in what type of orbital?

Accepted Answer

A) 4s 
B) 3p 
C) 3d 
D) 4d 
E) 4p

Exam 2: Quantum Mechanics in Action: Atoms