CrO4 - Cr(+6), O(-2)
SO4 - S(+6), O(-2)
PO4 - P(+5), O(-2)
K3PO4 - K(+1),P(+5),O(-2)
CaH2PO4 - Ca(+2),H(+1),P(+5),O(-2)
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CrO4 - Cr(+6), O(-2)
SO4 - S(+6), O(-2)
PO4 - P(+5), O(-2)
K3PO4 - K(+1),P(+5),O(-2)
CaH2PO4 - Ca(+2),H(+1),P(+5),O(-2)