Which of the following compound is not coloured?

N a_{2} [C u C l_{4}]

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N a_{2} [C d C l_{4}]

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F e S O_{4}

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V I_{3}

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Solution

The correct option is B $N a_{2} [C d C l_{4}]$
$N a_{2} [C d C l_{4}]$ has no unpaired electrons. Electronic configuration of $C d^{2 +}$ is $[K r] 5 s^{0}, 4 d^{10}$ .

Hence, $N a_{2} [C d C l_{4}]$ is a colorless compound.

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