Which non-stoichiometric point defect is responsible for colour in alkyl halides?
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In few cases, stoichiometric proportion of caution and anion gets disturbed due to some defect.It is known as non-stoichiometric defect.
Colour in alkyl halides arises due to metal excess defects or anionic vacancies.
In few cases, negative ions may be missing from their lattice sites leaving holes in which electrons remain trapped to maintain electrical neutrality.
This holes with entrapped electrons are called F-Centres.They impart colour to the crystal lattice.
Hope this helps.
Colour in alkyl halides arises due to metal excess defects or anionic vacancies.
In few cases, negative ions may be missing from their lattice sites leaving holes in which electrons remain trapped to maintain electrical neutrality.
This holes with entrapped electrons are called F-Centres.They impart colour to the crystal lattice.
Hope this helps.
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