MCQ
Which of the following is diamagnetic
- AOxygen molecule
- BBoron molecule
- C$N_2^ + $
- ✓None
all of them have unpaired electron, hence they all are paramagnetic.
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$\begin{array}{*{20}{c}}
{Ph - C{H_2} - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,}
\end{array}$ $>$ $\begin{array}{*{20}{c}}
{Me - C{H_2} - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,OH\,}
\end{array}$
(Atomic Mass of $\mathrm{Ba}=137 \,\mathrm{u})$
$n - Bu -\equiv\frac{(i) n-BuLi,n - C _{5} H _{11} Cl}{(ii) Lindlar\,\, cat, H _{2}}$