Which of the following statements is correct?

A
C-D bond is slightly weaker than $C - H$ bond
B
C-D bond is slightly stronger than $C - H$ bond
C
Both $C - H / C - D$ bonds are equally strong
D
Replacement of $D$ in $C - D$ by $Cl$ is faster than the replacement of $H$ in $C - H$ `

Solution:

deuterium is heavier than hydrogen and so the bond formed with carbon atom experiences less vibratory motion and so carbon bonded with deuterium has lesser energy than the bond formed between carbon and hydrogen

Therefore carbon deuterium is more stable than carbon hydrogen bond.

Hence the correct option is (B).

Solution:

Related content