Question

An excess of potassium ions makes KCl crystals appear
violet or lilac in colour since :
(a) some of the anionic sites are occupied by an unpaired
electron
(b) some of the anionic sites are occupied by a pair of
electrons
(c) there are vacancies at some anionic sites
(d) F-centres are created which impart colour to the
crystals
ab
b,c
ad
cd
bid​

Answer 1

Answer:

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