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Colour

Which of the ...

Question

Which of the following transition metal ions is colourless?

A

V^{2 +}

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B

C r^{3 +}

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C

Z n^{2 +}

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D

T i^{3 +}

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Solution

The correct option is C $Z n^{2 +}$
The ion will show colour if it has unpaired electrons in its electronic configuration,in $Z n^{+ 2}$ there are no unpaired electrons due to fully filled d orbital. Hence will be colourless.

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