Molecules of noble gases do not possess vibrational energy because, noble gases:

are monoatomic

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are chemically inert

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have completely filled shells

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are diatomic

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Solution

The correct option is A are monoatomic

Molecules of noble gas does not possess vibrational energy because noble gases are monoatomic. So, there is no other atom in respect of which it can vibrate. So they do not vibrate. Hence they do not posses vibrational energies.
Hence option A is correct.

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Similar questions

Noble gases are inert and do not form compounds like other elements because of their:

The noble gases are unreactive because ___ .

Statement 1: Noble gases are highly reactive.
Statement-2: Noble gases have fully filled outer orbits.

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