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Q.
The shape of $I _{3}^{-}$is
Chemical Bonding and Molecular Structure
Solution:
$I_{3}{ }^{-}=\left[1^{-} \cdot I_{2}\right]$
$H=\frac{1}{2}[V+M-C+A] $
$ =\frac{1}{2}[7+2-0+1]=\frac{10}{2}=s p^{3} d$
$I^-$ have $8 e ^{-}$
$\therefore $ by combining with two $I _{2}, I^-$ have $3 LP$ and $2 BP$
