Phosphorus Chemistry (3)

P3-

Phosphine. PH3 - like NH3 but weaker base

Phosphide - ionic compounds with some metals

6 Ca + P4 ? 2 Ca3P2

P5+

Phosphoric acid, phosphate compounds

Polyphosphates - condensation of hydroxy-acids

X-O-H + H-O-X ? X-O-X + H2O

di-phosphoric acid

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