Question

Identify the pairs in which both molecules do not possess same type of hybridization:
I. H$_2$O, SO$_2$
II. PCl$_3$, NH$_3$
III. SO$_2$, SO$_3$
IV. BCl$_3$, NCl$_3$

• A. I, III only
• B. II, IV only
• C. II, III only
• D. I, IV only

Hint:

Check hybridization using: steric number = bonded atoms + lone pairs. sp$^3$ → tetrahedral, sp$^2$ → trigonal planar. sp → linear.

Answer 1

The Correct Option is D

• H$_2$O: sp$^3$, SO$_2$: sp$^2$ → different hybridization.
• BCl$_3$: sp$^2$, NCl$_3$: sp$^3$ → different hybridization.
• Other pairs have same hybridization.