The correct order of the compounds listed in terms of increasing phosphorus content is:
PH3 < P2O5 < H3PO4 < Mg3(PO4)2 < K3PO4
The correct order of the compounds listed in terms of increasing phosphorus content is:
PH3 < P2O5 < H3PO4 < Mg3(PO4)2 < K3PO4