what makes alkali metal halides same time coloured which are otherwise colourless
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Alkali metal halides have anionic sites occupied by unpaired electrons.
These are called F-centres, and impart colourto the crystals of alkali metal halides.
For example, the excess of lithium in LiCl makes it pink.
These are called F-centres, and impart colourto the crystals of alkali metal halides.
For example, the excess of lithium in LiCl makes it pink.
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