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Empirical & Molecular Formula

A compound co...

Question

A compound contains atoms of three elements A, B and C. If the oxidation number of A is +2, B is +5 and that of C is -2, the possible formula of the compound is

A

A_{3} (B C_{4})_{2}

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B

A_{3} (B C)_{2}

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C

A B C_{2}

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D

A_{2} (B C_{3})_{2}

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Solution

The correct option is B $A_{3} (B C_{4})_{2}$
$A_{3} {(B C_{4})}_{2} = 3 \times 2 + {[5 + (- 2 \times 4)]}_{2} = 0$

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