Among the following, the compound that is both paramagnetic and coloured is

K_{2} C r_{2} O_{7}

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(N H_{4})_{2} (T i C l_{6})

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V O S O_{4}

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K_{3} [C u (C N_{4})]

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Solution

The correct option is C $V O S O_{4}$
$V^{+ 4} \to 3 d^{1} 4 s^{0}$
1 unpaired electrons. Hence, it is paramagnetic and coloured compound.

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