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Invisible wrote:
> And the inner-most shell
> can only hold 2 electrons (OK), the next shell can only hold 8 (um...
> OK), and next one out also holds 8 (er... why?), and the next shell can
> contain up to 18 electrons but when you start filling that shell you can
> only fill it up to a certain point, and then you have to go back and
> fill the shell below and then you can finish filling this shell (WTF?!)
> And the shell numbers are apparently just plucked out of the air, and
> the shell filling orders are completely arbitrary.
I recall it's 2 * n^2
2, 8, 18, 32...
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