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+1 vote
10.6k views
in Chemistry by (30.8k points)
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Substance having the lowest boiling point: 

(a) Hydrogen 

(b) Oxygen 

(c) Nitrogen 

(d) Helium

2 Answers

+2 votes
by (15.2k points)
selected by
 
Best answer

Correct answer is (d) Helium

('He' is monoatomic and has low atomic mass)- It belongs to Nobel gases group(group-18) and they have very least inter-atomic attraction due to which their boiling points are very low.

+2 votes
by (30.5k points)

Answer is (d) Helium

(He is monoatomic and has low atomic mass)

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