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According to the trend, the boiling point of the noble gases decreases down the group, as you know the number of shells increases down the group but the number of valency electrons remains the same. the further away the nucleus is to the outer electron, less the attraction.

Therefore, resulting in less energy needed to change the state of the element which brings us to the conclusion of decrease in the boiling points of noble gases down the group.

I hope it helps

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11y ago
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13y ago

Mainly due to their mass. For example, Helium is lighter than Krypton and thus Helium has a lower boiling point (i.e. it is harder to liquify).

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Q: Comment on the trend in the boiling points of the Noble gas elements and why do boiling points vary in this manner.?
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