What are the oxidation number of the two elements marked with asterisk ? `H_(3)overset(**)PO_(2),overset(**)C_(6)H_(12)O_(6)`

Explanation

`H_(3)overset(**)PO_(2)`,: Let the oxidation number of P in `H_(3)PO_(2)`be x
`therefore underset(("forNA"))(3xx(+1)+x)underset(("forO"))(2xx(-2)=0)thereforex=+1`
Therefore the oxidation number P in `H_(2)PO_(2)`is +1 .
`overset(**)C_(6)H_(12)O_(6)`:Let the oxidation number of C in `C_(6)H_(12)O_(6)` be x
`therefore6xxx+underset(("for H"))(12xx(+1))underset(("for O"))(+6xx(-2))=0therefore x=0`
Therefore , the oxidation number of C in `C_(6)H_(12)O_(6)` is zero.