The oxidation state of the central atom in the anion of the compound NaH2PO2 will be-

1. +3

2. +5

3. +1

4. -3


 
 



Hint: The range of oxidation states shown by  P is -3 to +5

Let the oxidation state of P in NaH2PO2 is x.
1+2×1+x+2×-2=0               1+2+x-4=0                       +x-1=0                             x=+1