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Chapter 11 - Heat and Thermodynamics - 16
1.
When a metal atom lose one or more electrons, it forms?
a) anions
b) none of these
c) becomes neutral
d) cations
2.
Na
+
means that it has?
a) gained two electrons
b) gained one electron
c) lost one electron
d) lost two electrons
3.
When a nonmetal gains one or more electrons, it forms?
a) anions
b) both of these
c) none of these
d) cations
4.
An ion is formed when an atom?
a) both of these
b) gain electrons
c) lose electrons
d) none of these
5.
The charge on sodium ion is?
a) -1
b) -2
c) +2
d) +1
6.
How many protons are present in the nucleus of sodium?
a) 23
b) 10
c) 12
d) 11
7.
The nucleus of sodium has a total charge of?
a) -11
b) +10
c) +11
d) +12
8.
When a molecule loses or gains electrons, the resulting species is called as?
a) anion
b) free radical
c) molecular ion
d) cation
9.
Molecular ions only exist at?
a) low temperature
b) high temperature
c) all of these
d) zero temperature
10.
The charge on an oxide ion is?
a) +2
b) -2
c) -2
d) -1
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