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Which of the following exhibits the weakest intermolecular forces? (a) He (b) HCl (c) NH3 (d) H2O

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Which of the following exhibits the weakest intermolecular forces? 

(a) He 

(b) HCl 

(c) NH3 

(d) H2O

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1 Answer

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Best answer

The correct option is (a) He.

Explanation:

Helium is a noble gas. Weak van der Waal's forces operate between the gaseous molecules of helium. In NH3, H2O and HCl, there is strong hydrogen bonding between the molecules.

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