1.

The molecular electronic configuration of \[H_{2}^{-}\] ion is

A.                 \[{{\left( \sigma \,1s \right)}^{2}}\]         
B.                 \[{{\left( \sigma \,1s \right)}^{2}}{{\left( {{\sigma }^{x}}1s \right)}^{2}}\]
C.                 \[NO\] 
D.                 \[{{\left( \sigma \,1s \right)}^{3}}\]
Answer» D.                 \[{{\left( \sigma \,1s \right)}^{3}}\]


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