A) \[1{{s}^{0}}\]
B) \[1{{s}^{1}}\]
C) \[1{{s}^{2}}\]
D) \[1{{s}^{1}}2{{s}^{1}}\]
Correct Answer: C
Solution :
The hydride ion is \[{{H}^{-}}\] and its configuration is\[1{{s}^{2}}\].
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