Question

Oxidation number of sulphur in $S_2{O}_3^{2-}$ “ is

• A. $-2$
• B. $+6$
• C. $+2$
• D. $0$

Answer 1

Answer: (C)

$\stackrel{\ast }{S_2}{O}_3^{2-}$
$2x+3(-2)=-2;$
$x=+2$