we should then expect a regular increase from 0 to 5, or no valency at all. No atomic model, so far as I know, has succeeded in making this difference plausible; but it is not essential to the ...

In 1913, Niels Bohr revised Rutherford's model by suggesting that the electrons ... However, there was still a difference between the atomic number of the atom and the atomic mass.

Get Instant Summarized Text (Gist) The atomic nucleus of lead-208, previously thought to be perfectly spherical, has been found to be slightly elongated, resembling a prolate spheroid. This ...