Chapter 7

Matching

Match each item with the correct statement below.
a.
halide ion
e.
valence electron
b.
octet rule
f.
coordination number
c.
ionic bond
g.
metallic bond
d.
electron dot structure

____ 1. an electron in the highest occupied energy level of an atom

____ 2. Atoms react so as to acquire the stable electron structure of a noble gas.

____ 3. a depiction of valence electrons around the symbol of an element

____ 4. an anion of chlorine or other halogen

____ 5. the force of attraction binding oppositely charged ions together

____ 6. the attraction of valence electrons for metal ions

____ 7. the number of ions of opposite charge surrounding each ion in a crystal

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

____ 8. How many valence electrons are in an atom of phosphorus? a.
2
c.
4
b.
3
d.
5

____ 9. How many valence electrons are in an atom of magnesium? a.
2
c.
4
b.
3
d.
5

____ 10. How many valence electrons does a helium atom have? a.
2
c.
4
b.
3
d.
5

____ 11. How many valence electrons are in a silicon atom?
a.
2
c.
6
b.
4
d.
8

____ 12. What is the name given to the electrons in the highest occupied energy level of an atom? a.
orbital electrons
c.
anions
b.
valence electrons
d.
cations

____ 13. How does calcium obey the octet rule when reacting to form compounds? a.
It gains electrons.
b.
It gives up electrons.
c.
It does not change its number of electrons.
d.
Calcium does not obey the octet rule.

____ 14. What is the maximum charge an ion is likely to have? a.
2
c.
4
b.
3
d.
5

____ 15. What is the electron configuration of the calcium ion? a.
1s2s2p3s3p
c.
1s2s2p3s3p4s
b.
1s2s2p3s3p4s
d.
1s2s2p3s

____ 16. What is the electron configuration of the gallium ion? a.
1s2s2p3s3p
c.
1s2s2p3s3p4s4p
b.
1s2s2p3s3p4s
d.
1s2s2p3s3p3d

____ 17. What is the charge on the strontium ion?
a.
2–
c.
1
b.
1–
d.
2

____ 18. The octet rule states that, in chemical compounds, atoms tend to have ____. a.
the electron configuration of a noble gas
b.
more protons than electrons
c.
eight electrons in their principal energy level
d.
more electrons than protons

____ 19. How many electrons does silver have to give up in order to achieve a pseudo-noble-gas electron configuration? a.
1
c.
3
b.
2
d.
4

____ 20. How many electrons does barium have to give up to achieve a noble-gas electron configuration? a.
1
c.
3
b.
2
d.
4

____ 21. What is the formula of the ion formed when potassium achieves noble-gas electron configuration? a.
K
c.
K
b.
K
d.
K

____ 22. Which of the following ions has a pseudo-noble-gas electron configuration? a.
Fe
c.
Cu
b.
Mn
d.
Ni

____ 23. Which of the following elements does NOT form an ion with a charge of 1? a.
fluorine
c.
potassium
b.
hydrogen
d.
sodium

____ 24. What is the formula of the ion formed when tin achieves a stable electron configuration? a.
Sn
c.
Sn
b.
Sn
d.
Sn

____ 25. What is the formula of the ion formed when cadmium achieves a pseudo-noble-gas electron configuration? a.
Cd
c.
Cd
b.
Cd
d.
Cd

____ 26. Which of the following is a pseudo-noble-gas electron configuration? a.
1s2s2p3s3d
c.
1s2s2p3s3p3d
b.
1s2s2p3s3p
d.
1s2s2p3s3d4s

____ 27. How many electrons does nitro...

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