Chemical Bonding - Result Question 100
####76. Interpret the non-linear shape of $H _2 S$ molecule and non-planar shape of $PCl _3$ using valence shell electron pair repulsion (VSEPR) theory. (Atomic number : $H=1, P=15$, $S=16, Cl=17)$
(1998, 4M)
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Solution:
- In $H _2 S, S$ is $s p^{3}$-hybridised with two lone pairs of electrons on it giving V-shaped (water like) shape. In $PCl _3, P$ is $s p^{3}$-hybridised with one lone pair of electrons on it. Therefore, $PCl _3$ is pyramidal in shape.
