Molecules of four imaginary substances are sketched in the table below. Each ske

Question

Molecules of four imaginary substances are sketched in the table below. Each sketch is shaded to show the electrostatic potential at the surface of the molecule. Rank these substances in decreasing order of the strength of the intermolecular forces in them. In other words, choose 1 next to the substance in which the molecules exert the strongest intermolecular forces on each other. Choose 2 next to the substance in which the molecules exert the second strongest intermolecular forces on each other, and so forth. Note: all of the molecules are neutral, and you may assume none of them experience hydrogen bonding. strength of electrostatic substance potential map. ar force (Choose one) (choose one)

Explanation / Answer

B 1, D 2 , A 3 , C 4

B: There is partial positive charg is at one end and partial negative charge is at other end, so it is dipolar molecule, it has dipole - dipole interaction among its molecules.

D: The is partial positive sign at bothe ends and negative sign on the middle atoms. Though it has dipole dipole interaction its strength of attraction is low due to repulsion among the ends of molecules.

A: It is non polar molecule but a induced dipoles are generated for a while when atoms come close together.

C: It a monoatomic molecule which has weakest interaction among its atoms.

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