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JEE Main levelOne or more correct optionsDifficulty 2 of 3bn021

Select the species in which the named element has a NON-INTEGER (fractional) average oxidation number (H is $+ 1$ , O is $- 2$ ).

AS in $S X_{4} O X_{6} X^{2 -}$
BN in $HN X_{3}$
CFe in $Fe X_{3} O X_{4}$
DC in $C X_{6} H X_{12} O X_{6}$

Answer: A, B, C

HN X_{3}

:

1 + 3 x = 0

gives

x = - \frac{1}{3}

.

S X_{4} O X_{6} X^{2 -}

:

4 x - 12 = - 2

gives

+ 2.5

.

Fe X_{3} O X_{4}

:

3 x - 8 = 0

gives

+ \frac{8}{3}

.

C X_{6} H X_{12} O X_{6}

:

6 x + 12 - 12 = 0

gives

0

, an integer.

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