Question

what is the oxidation state of phosphorus in NaH2PO2?

Answer 1

Let oxidation state(os)of  P is NaH2PO2 be x
os of oxygen is -2
os of Na is +1
os of hydrogen is +1
Total os of a molecule is zero (if neutral).
so by adding  os we get
(+1)+(+1×2)+(x)+-2×2)=0
or
x=+1
So oxidation state of phosphorus in NaH2PO2 is +1

Answer 2

Answer:

oxidation state of P in NaH2PO2 is +1