Question

Singlet and triplet carbene are same in___________.

• A. Types of hybridisation
• B. Number of unshared $\overline{e}$ pairs (or $LP\overline{e}s$)
• C. Number of $\sigma$-bonds
• D. Bond angle

Answer 1

The correct option is C Number of $\sigma$-bonds

Singlet and triplet carbene are same in a number of $\sigma$-bonds. They differ in their spin states.

Singlet carbenes are spin-paired. In the language of valence bond theory, the molecule adopts a $s{p}_2$ hybrid structure. Triplet carbenes have two unpaired electrons.