Question

estado de oxidación (HnO4)-2

Answer 1

(HNO4)⁻²

HNO4 = -2

₊₁ ₊ₓ ₋₂
H N  O4 = -2
``````````````````
+1+x-8 = -2
x = -2 + 8 - 1
x = 5

N = +5
H = +1
O = -2