The basic hydrogen atom is the simplest of all atoms ... which Bohr characterized with different values of a first, ‘principal’ quantum number 2. This bold hypothesis could explain some ...
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A new calculation of the electron's self-energy improves determination of fundamental constantsIt came when the one electron of the hydrogen atom transitioned from the 2P 1/2 energy level to the 2S 1/2 level. (The leftmost number is the principal quantum number, much like the discrete but ...
Everyone at that time imagined the atom as a "plum pudding ... The shells in which electrons orbit have different quantum numbers and hold only certain numbers of electrons -- the first shell ...
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