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Substance having the lowest boiling point: (a) Hydrogen (b) Oxygen (c) Nitrogen (d) Helium |
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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. Answer is (d) Helium (He is monoatomic and has low atomic mass) |
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