Question

Achar o NOX do fósforo nos íons:
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Answer 1

a) HP03 ^-2

1+x+3(-2)=-2

1+x-6=-2

x-6=-2-1

x-6=-3. x=-3 + 6

x= +3

PO2^-

x+2(-2)=-1

x-4=-1

x=-1+4

x=+3