Which hybridization scheme occurs about phosphorus when phosphorus forms a double bond?

Phosphorus exhibits 5 electrons, 1 bond is double bond, and for that two electrons are needed. Another three electrons can produce three bonds.

Therefore, the total numbers of bonds formed will be 4, that is, 3 single bond and  1 double bond. Hence, the hybridization will be SP₃.

your answer would be “dry”