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The decreasing valuse of bond angles fro...

The decreasing valuse of bond angles from `NH_(3) (106^(@))` to `SbH_(3)(101^(@))` down group -15 of the periodic table is due to .

A

increasing bp-bp repulsion

B

increasing p-orbital character in `sp^(3)`

C

decreasing lp-bp repulsion

D

decreasing electrognegativity

Text Solution

Verified by Experts

The correct Answer is:
D
Decreasing order of value of bond angles are `NH_3 gt PH_3 gt AsH_3 gt SbH_3 `
As the electronegativity of central atom increases , bonded electron polarises towards central atom more , so, repulsion increases and bond angle increases .
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