If colour of \( \left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}(\mathrm{en})_{2}\rig...

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If colour of \( \left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{2}(\mathrm{en})_{2}\right]^{2+} \) is blue-purple then what would be the colour of \( \left[\mathrm{Ni}(\mathrm{en})_{3}\right]^{2+} \) ?
(a) Green
(b) Pale blue
\( P \)
(c) Deep blue
(d) Violet
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