2. structure of atom — Chemistry STD 11 Science — Question

($A$) $\mathrm{C}_2^{2-}$ is expected to be diamagnetic

($B$) $\mathrm{O}_2{ }^{2+}$ is expected to have a longer bond length than $\mathrm{O}_2$

($C$) $\mathrm{N}_2^{+}$and $\mathrm{N}_2^{-}$have the same bond order

($D$) $\mathrm{He}_2^{+}$has the same energy as two isolated He atoms

$(I)\,\,q + \mathrm{w}$           $(II)\,\, q$

$(III)\,\, \mathrm{w}$              $(IV)\,\, H - TS$

$\begin{array}{*{20}{c}}
{R =  - CH - Cl}\\
{|\,\,}\\
{\,\,\,\,C{H_3}}
\end{array}\,\,\,\,,\,\,\,\,\,\,\,\,\,\,\begin{array}{*{20}{c}}
{S =  - CH - Cl}\\
{|\,\,}\\
{Br}
\end{array}$