A) ionic solid
B) covalent solid
C) metallic solid
D) molecular solid
Correct Answer: D
Solution :
Molecular crystals may be polar molecular crystal (held together by weak polar forces) or non polar molecular crystals (held together by weak van der Waal forces). Naphthalene is a nonpolar type molecular crystal, van der Waal forces increase with molecular size. This is the reason why iodine is solid while bromine is a liquid and chlorine is a gas. Naphthalene sublimes easily.You need to login to perform this action.
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