The chemical formula for lithium phosphide is Li sub 3 cap p Which best describes this ionic compound?

Lithium forms ions with a 1+ charge, while phosphorus forms phosphide ions with a 3− charge. In Li₃P, three lithium ions contribute a total charge of 3+, which balances one phosphide ion’s 3− charge, so choice D is correct.

AI-written and checked against the verified answer.