Bohr-Bury scheme –
i. The maximum number of electrons that could be present in a shell is given by the rule 2n2, where n is the orbit number or energy level.
Example, in first shell, n = 1, then number of electrons = 2
Similarly for other shells, the diagram is shown below:
ii. The maximum number of electrons that can be accommodated in the outermost orbit is 8.
iii. Electrons are not accommodated in a given shell unless all the inner shells are completely filled.
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