Question

How many degenerate sp2 orbitals are there?

Answer 1

3

Explanation:

Each of the carbons makes two covalent bonds with hydrogen by overlapping of s and `sp^2` orbitals, with bond angle 120°, trigonal planar, so there are 3 degenerate oribitals.

A `pi` bond is formed between the carbons perpendicular to the molecular plane, due to 2p–2p overlap.