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NEET levelSingle correct optionDifficulty 1 of 3bn005

What is the oxidation number of sulfur in the sulfite ion, $SO X_{3} X^{2 -}$ (O is $- 2$ )?

A $+ 3$
B $+ 6$
C $+ 4$
D $+ 2$

Answer: C

Each O is

- 2

and the ion has charge

- 2

:

x + 3 (- 2) = - 2

, so

x = + 4

.

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