Question

Among the following species, identify the isostructural pairs. $NF_3$, $NO_3^-$, $BF_3$, $H_3O^+$, $N_3H$

• A. $[NF_3, NO_3^-]$ and $[BF_3, H_3O^+]$
• B. $[NF_3, N_3H]$ and $[NO_3^-, BF_3]$
• C. $[NF_3, H_3O^+]$ and $[NO_3^-, BF_3]$
• D. $[NF_3, H_3O^+]$ and $[N_3H, BF_3]$

Answer 1

Answer: (C)

$[NF_3, H_3O^+]$ and $[NO_3^-, BF_3]$

Answer 2

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