Question

In which of the following compounds, observed
bond angle is found to be greater than expected,
but not due to back bonding
(1) N(SiH3)3
(2) O(CH3)2
(3) O(SiH3)2
(4) All of these​

Answer 1

Answer:

4 . all of these

Explanation:

mark as brillant

Answer 2

Answer:

The correct answer is option number (2) O(CH3)2, for which the bond angle is found to be greater than expected, but not due to back bonding.

Explanation:

The observed bond angle is larger than expected due to back bonding. The larger bond angle is owing to steric repulsions between the methyl groups, as O(CH3)2 has no back bonding.

What is back bonding?

Back bonding is a type of bonding that occurs when one atom has a single electron and the other has an empty orbital next to it in a complex. A molecule with back bonding exhibits pi-bonding features because pi-bonding happens after the creation of the sigma bond.

Thus, back bonding has no impact on the bond angle.