Question

intermolecular force of attraction​

Answer 1

Explanation:

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Answer 2

Answer:

The intermolecular forces involved in molecular crystals are as follows:

(1) Weak dipole-dipole interactions : The solids constituting polar molecules like HCI, H_2O, SO_2 etc. which possess pernanent diple moment involve weak dipole-dipole interactions.

(2) Very weak dispersion or London forces : The solids consisting of nonpolar molecules like CH_4, H_2, etc. involve weak dispersion forces. They are also involved in monoatomic solids like Ar. Ne.

(3) Intermolecular Hydrogen bonds : I) ln this crystalline solids, the constituent particles are the molecules which contain hydrogen atom linked to highly clectronegative atom like F, O or N.

ii) In these, molecules are held by hydrogen bonds in which H atom of one molecule is bonded to electronegative atom (like F, N or 0) of another molecule.

(iii) Since hydrogen bonding is weak, these solids have very low melting points and generally at room temperature they exist in the liquid or gaseous state.

iv) They are non-conductors of electricity.