Question

what is the name of this compound? ca3p2
not a compound
calcium phosphide
tricalcium phosphide
tricalcium diphosphide

Explanation:

The compound $\text{Ca}_3\text{P}_2$ is formed by calcium (Ca) and phosphorus (P). In naming ionic compounds, the metal (calcium) is named first, followed by the non - metal (phosphorus) with its ending changed to 'ide'. Since there are 3 calcium atoms and 2 phosphorus atoms, the name is calcium phosphide.

Answer:

calcium phosphide