A hard substance melts at high temperature and
Question:

A hard substance melts at high temperature and is an insulator in both solid and in molten state. This solid is most likely to be a / an :

  1. Ionic solid

  2. Molecular solid

  3. Metallic solid

  4. Covalent solid


Correct Option: , 4

Solution:

Covalent or network solid have very high melting point and they are insulators in their solid and molten form.

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