The diphosphate ion is a biologically important polyatomic ion. If the ionic compound calcium diphosphate has the formula Ca₂P₂O₇,which correctly represents the ion symbol of the diphosphate ion?

Question

Quizplus · Accepted Answer

The diphosphate ion is represented by the formula $\text{P}_2\text{O}_7^{4-}$, which matches the structure in option D, indicating two phosphorus atoms and seven oxygen atoms with a -4 charge.

The Diphosphate Ion Is a Biologically Important Polyatomic Ion