Solid A is a very hard electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?
Answers
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Answer :
Covalent solid because it does not conduct electricity even in molten state.
Explanation : In covalent solids, covalent bond(ing) is its nature of interaction between the particles as in directional, atoms are held very strongly at their position and it results in a giant interlocking structure, due to this, unavailable to conduct electricity and hence, It is sometimes insulators and conductors usually, it depends on free electrons. It has extremely high melting point as large energy is required to break strong forces of attraction, it require more heat to break the bond and that's why covalent bond is weak in thermal motion due to this, it may even decomposes completely before melting. Therefore, covalent solids appearance is hard & brittle in physical nature.
Answer:
The given properties are the properties of a covalent or network solid. Therefore, the given solid is a covalent or network solid.
Examples of such solids include diamond (C) and quartz (SiO2).