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A comment on iPhones are allergic to helium. Parent comment

Re:iPhones are allergic to helium by Wingman4l7 on Wednesday October 31, 2018 @03:19AM (#18343861)
I was about to correct you and say that hydrogen is the smallest, but apparently, hydrogen's atomic radius is actually a bit bigger. Helium's radius is smaller due to the larger charge of the nucleus making for a tighter electron cloud.
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Re:iPhones are allergic to helium by manojlds on Wednesday October 31, 2018 @09:22AM (#18345403)
I too had the same thought, and then thought maybe hydrogen molecule is being considered. Read up to see that hydrogen atom has bigger radius. TIL.
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Re:iPhones are allergic to helium by jankotek on Wednesday October 31, 2018 @05:26AM (#18344266)
Hydrogen creates molecules H2.
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Re:iPhones are allergic to helium by Florin_Andrei on Wednesday October 31, 2018 @03:10PM (#18348444)
Yup. Larger atomic radius due to less nuclear charge, and it's only stable in molecular form - H2.
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