The oxidation state of a central atom in the anion of compound NaH2PO2 will be ______.

(i) +3

(ii) +5

(iii) +1

(iv) –3

Correct Answer: (iii) +1

Explanation:

NaH₂PO₂

$=1+(2x+1)+x+2(-2)=0$

$x-1=0$

$x=\; +1$