Chemistry (Chang), 10th Edition

Chapter 8: Periodic Relationships Among the Elements

Self Assessment A

1
How many valence electrons are there in an atom of arsenic?
A)6
B)5
C)4
D)3
E)2
2
All of the following Groups contain representative elements except:
A)Group 1A
B)Group 3A
C)Group 5A
D)Group 5B
E)Group 6A
3
The general electron configuration for the anion formed from a neutral atom of any Group VII element is:
A)ns2np6
B)ns2np5
C)ns2np4
D)ns2np3
E)ns2
4
Which of the species listed below is not isoelectronic with the others?
A)O-
B)F-
C)Mg2+
D)Na+
E)N3-
5
Which of the following atoms has the largest radius?
A)N
B)F
C)Cl
D)Li
E)Na
6
Which of the following species has the largest radius?
A)Cl
B)Cl-
C)Al3+
D)Na+
E)F-
7
Which of the following elements will have the largest first ionization energy?
A)C
B)Cl
C)Na
D)Al
E)F
8
Which of the following elements will have the greatest electron affinity?
A)Cl
B)K
C)He
D)Na
E)Rb
9
On the periodic table, the elements having the largest degree of metallic character are found:
A)at the top of Group IIIA
B)at the top of Group IA
C)at the top of Group VIIA
D)at the bottom of Group IA
E)at the bottom of Group VIIA
10
Which of the following is an amphoteric oxide?
A)Na2O
B)MgO
C)Al2O3
D)SO2
E)Cl2O7
11
Which is incorrectly paired?
A)diamagnetic; silver
B)diamagnetic; magnesium
C)paramagnetic; iron
D)paramagnetic; zirconium
12
What is the electron configuation of bromine?
A)[Ar]
B)[Ar]3d104s24p5
C)[Ne]3s2
D)None of the above
13
What is the electron configuation of Rb+?
A)[Ne]
B)[Ar]
C)[Kr]
D)[Xe]
14
Which of the following has the larger atomic radius, Cu or Cl2
A)Cu
B)Cl2
15
Which ion has the smallest ionic radius, Mg2+ or Ca2+?
A)Mg2+
B)Ca2+
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