Question

Why salt of sc3+,ti4+,v5+ are colourless?

Answer 1

Answer:

Explanation:

Scandium atomic no 21

Sc3+ has no unpaired electron

Ti atomic no 22

Ti4+ has no unpaired electron

Vanidium atomic no 23

V5+ has no unpaired electron

Colour is due to presence of unpaired electron ,d- d transition

So sc3+ ,ti4+ nd V5+ are colourless.