Q44Multiple correct
An excess of potassium ions makes KCl crystals appear violet or lilac in colour since ________.
- (i)some of the anionic sites are occupied by an unpaired electron.
- (ii)some of the anionic sites are occupied by a pair of electrons.
- (iii)there are vacancies at some anionic sites.
- (iv)F-centres are created which impart colour to the crystals.
Show answer
(i) some of the anionic sites are occupied by an unpaired electron.
(iv) F-centres are created which impart colour to the crystals.