Question

1)Substance A melts at 2300 °c, and it doesn’t conduct electricity even when molten and doesn't dissolve in water. What is the structure and bonding of this?

Answer 1

Answer:
Substance A is a Giant covalent structure with covalent bonding

Explanation:
Substance A is a Giant covalent structure. There are strong covalent bonds between the atoms and a large amount of heat energy is needed to break the bonds resulting in high melting point. Substance A does not conduct electricity in molten state reason being, it exist as molecules which are electrically neutral and there are no mobile charged carriers.

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