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Q. The change in bond angle as the s-character of hybridized orbital decreases is,

NTA AbhyasNTA Abhyas 2020Chemical Bonding and Molecular Structure

Solution:

As the s-character of hybridized orbitals decreases the bond angle also decreases

In $sp^{3}$ hybridisation: $s-$ character $1/4$ , bond angle $109^{o}$

In $sp^{2}$ hybridisation: $s-$ character $1/3$ , bond angle $120^{o}$

In $sp$ hybridisation: $s-$ character $1/2$ , bond angle $180^{o}$