[Sc ( H_2 O)_6 ]^ 3 + ion is - Vidyadip

MCQ

${[Sc{({H_2}O)_6}]^{3 + }}$ ion is

✓
Colourless and diamagnetic
B
Coloured and octahedral
C
Colourless and paramagnetic
D
Coloured and paramagnetic

✓

Answer

Correct option: A.

Colourless and diamagnetic

a
(a)$_{21}Sc = [Ar]\;3{d^1}4{s^2}$

$S{c^{3 + }} = [Ar]\;3{d^0}4{s^0}$ no unpaired electrons in $d$ sub shell, so it is diamagnetic and colourless.

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