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Which of the following hydrides has the ...

Which of the following hydrides has the smallest bond angle?

A

`H_2Se`

B

`H_2S`

C

`H_2Te`

D

`H_2O`

Text Solution

Verified by Experts

The correct Answer is:
D
O, Se, Se, Te belong to Group 16.
On moving down the group, size of atom increases.
.O. is most electronegative and lone pairs lie close to the atom electron cloud. This causes repulsion in lone pairs of oxygen and bond pairs of hydrogen.

`:.` Angle maximum due to l.p - b.prepulsion.

Te has maximum size: lone pair lie far away from the atom efectron cloud. Lone pairbond pair repulsion is the least.
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