Phosphide

In chemistry, a phosphide is a compound of phosphorus with a less electronegative element or elements. Binary compounds are formed with the majority of less electronegative elements with the exception of Hg, Pb, Sb, Bi, Te, Po. Typically there are a range of stoichiometries with each element; for example, potassium has nine phosphides (K₃P, K₄P₃, K₅P₄, KP, K₄P₆ K₃P₇, K₃P₁₁, KP_10.3, KP₁₅) and nickel has eight (Ni₃P, Ni₅P₂, Ni₁₂P₅, NiP₂, Ni₅P₄, NiP, NiP₂, NiP₃).