Question

why we can't form a double bond at a bridge head carbon?​

Answer 1

Answer:

Bridgehead Double Bonds Have Poor Orbital Overlap

Remember what is required in order for a π bond to form – we require overlap between the two adjacent p orbitals. In other words, they must be in the same plane, lined up like the plastic men on a foosball table.

Explanation:

Hope this will help you ☺️