The $\mathrm{Cl}-\mathrm{Co}-\mathrm{Cl}$ bond angle values in a fac- $\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{3} \mathrm{Cl}_{3}\right]$ complex is/are :
$90^{\circ} ~\&~ 120^{\circ}$
$90^{\circ}$
$180^{\circ}$
$90^{\circ} ~\& ~180^{\circ}$
Solution
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