can someone explain how bohr used the mass of the nucleus in helium to develop a ratio of 4.0016 of the original rydberg constant for hydrogen? I can't seem to find the proof anywhere, I read vaguely that he found this value by calculating the increased charge in the nucleus and using the mass of the nucleus in his calculation to say that the nucleaus and electron orbit eachother around a centre of mass, but whenever i try to do the calculations i keep getting a value of 4.002 instead of 4.0016(adsbygoogle = window.adsbygoogle || []).push({});

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# The radius of an electron orbit in helium

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