Jawabanmu

2014-04-16T12:54:36+07:00
2014-04-16T12:58:14+07:00
A. H2PO4 minus 1 -> P = +5
b. HPO4 minus 2 -> P = +7
c. H3PO4 -> P = +5
d. PO4 minus 3 -> +5
e. P2O3 -> P = +3

Jadi jawabannya E