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3- Lonlsalids which have auwionc Vacanaduuto metal ex cen due es, dave Lopecefour- Explain te heup f swteentdavelo

Answer»

Ionic solids, which haveanionicvacancies due to metal excess defect, develop colour. The colour develops because of the presence ofelectronsin theanionicsites. Theseelectronsabsorb energy from the visible part of radiation and get excited.



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