Question

strotium ion is colourless but chromium ion coloured why​

Answer 1

Explanation:

Sc

3+

has 3d

0

outer electronic configuration with zero unpaired electrons. Hence, Sc

3+

salts are colorless.

Cr

3 has 3d outer electronic configuration with 3 unpaired electrons. Hence, Cr

3+ salt are coloured.

Note: Colour in transition metal compounds is due to presence of unpaired electrons which cause d-d transitions.

Answer 2

Answer↕️

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