Question

On comparison with H–C–H bond angle of methane, the C–N–C bond angle of trimethylamine is:

• A. Higher
• B. No change
• C. Not comparable
• D. Lower

Hint:

In sp\(^3\) hybridized molecules, bond angles tend to be close to 109.5°, whether it’s a C–H bond or C–N bond.

Answer 1

The Correct Option is B

Step 1: Bond angles in methane and trimethylamine. The C–N–C bond angle in trimethylamine is very similar to the H–C–H bond angle in methane due to the sp\(^3\) hybridization of both carbon and nitrogen atoms.
Step 2: Conclusion. Thus, the C–N–C bond angle in trimethylamine does not differ from the H–C–H bond angle in methane.