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Hydrogen and Helium+ Radius


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yep' date=' here you are;

H- 154 pm

H 78 pm

H+ 10^-5 pm

covalent 30 pm

van der Waals 120 pm


He 128 pm

van der Waals 122 pm

He+1 0.93 A...i dont have a key that can type the A with the little circle above it.[/quote']


78 pm for H sounds like the average value, because the most probable value should be the Bohr radius, which is 52.9 pm.

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