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Q. $[Sc(H_2O)_6 ]^{3+}$ ion is

Jharkhand CECEJharkhand CECE 2010Coordination Compounds

Solution:

$[Sc(H_2O)_6 ]^{3+}$,oxidation state of Sc is + 3.
$\because\, Sc^{3+}$ has no unpaired electrons.
$\therefore [Sc(H_2O)_6]^{3+}$ is diamagnetic and colourless.

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