MCQ
Among the following species, the least angle around the central atom is in
- A$O_3$
- B$I^-_3$
- C$NO^-_2$
- ✓$PH_3$
✓
Answer
Correct option: D.
$PH_3$
d
$(A) \,O _3$ molecule undergoes $sp^2$ hybridisation, so its bond angle is nearly $120^{\circ}$
$(A) \,O _3$ molecule undergoes $sp^2$ hybridisation, so its bond angle is nearly $120^{\circ}$
$(B) \,I_3^-$ undergoes $sp^3 d$ hybridisation and linear shape so its bond angle is $180^{\circ}$.
$(C) \,NO _2^{-}$ undergoes $s p^2$ hybridisation and So, its bond angle is nearly $120^{\circ}$
$(D) \,PH _3$ undergoes $sp ^3$ hybridisation and contains one lone pair, so its bond angle is mearly $90^{\circ}$
$\therefore$ Among all the options, $PH _3$ has least angle around the central atom.
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