Chemical Bonding - Result Question 128
28. Among the following species, identify the isostructural pairs.
$$ NF _3, NO _3^{-}, BF _3, H _3 O^{+}, N _3 H $$
$(1996,1 M)$
(a) $\left[NF _3, NO _3^{-}\right]$and $\left[BF _3, H _3 O^{+}\right]$
(b) $\left[NF _3, N _3 H\right]$ and $\left[NO _3^{-}, BF _3\right]$
(c) $\left[NF _3, H _3 O^{+}\right]$and $\left[NO _3^{-}, BF _3\right]$
(d) $\left[NF _3, H _3 O^{+}\right]$and $\left[N _3 H, BF _3\right]$
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Solution:


Therefore, $NF_3, H_3O^+$ and $BF_3, NO_3^-$ have the same shape.