Which of the following is paramagnetic as well as coloured?

S c^{3 +}

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T i^{4 +}

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C u^{2 +}

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C u^{+}

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Solution

The correct option is C $C u^{2 +}$
$C u^{2 +} : [A r] 3 d^{9}$ ; one unpaired electron. Thus, coloured and paramagnetic

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