It is well known that Bohr model is not totally right. But I recently discovered a very curious inconsistency (if I am right) which I haven't seen explained anywhere.
The first postulate of Bohr theory is that the Orbital momentum of the electron is quantized L=mvr=nh (where h mean the Dirac constant). This means that if there is a transition between level n=5 to n=1 (Balmer series) the orbital momentum changes by 4h!!! Based on this rule and his second postulate Bohr finds the right energy for this transition (and all others as well). But this transition is a release of just one photon and a photon has spin 1h. (h,0,−h). So it can change the orbital momentum with 1,0 or −1 and not by 4. Maybe the spin of electron can also change with 1 (from 12 to -12) which combined changes orbital momentum by most 2. I'm very surprised to make such conclusion.
I am wrong here?
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