Chemical Bonding - Result Question 63

38. The hybridisation of sulphur in sulphur dioxide is

$(1986,1 M)$

(a) $s p$

(b) $s p^{3}$

(c) $s p^{2}$

(d) $d s p^{2}$

Show Answer

Answer:

Correct Answer: 38. (c)

Solution:

  1. In $SO _2$ , the Lewis-dot structure is

$O=\ddot{S}=O$

Electron pairs at $ S = 2 ( \sigma -bonds) +1$ $(lone-pair)$ $=3$ $s p^{2}$ hybridised.

NOTE

$\pi$ -bonded electrons are not present in hybrid orbitals, therefore not counted in electron pairs. Rather $\pi$ bonds are formed by lateral overlapping of pure $p$ -orbitals.

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