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प्रश्न
Why has sodium chloride a high melting point?
उत्तर
Sodium chloride contains positively charged sodium atom and negatively charged chlorine atom. Due to these oppositely charged species, there is a strong intermolecular force between them. Hence, it requires huge amount of energy to break this strong intermolecular force and melt the salt. Therefore, sodium chloride has a high melting point.
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