Question

Which of the following options represent the change in the bond angle in given reaction?
BF3 → BF4-

(1) 120°
(2) 109°28
(3) 10°72
(4) 60°​

Answer 1

Answer:

(3) 10°72'

Explanation:

In BF3, boron is in sp² hybridisation making a triangular planar shape, meaning the bond angle between two F atoms is 120°.

In BF4-, the hybridisation state changes to sp³ making a tetragonal shape, where the F atoms are inclined at 109°28' to each other.

The change in bond angle is 120°-109°28' = 10°72'

Which is option 3.

Answer 2

Answer:

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