(a) Explain Bohr and Bury rules for distribution of electrons into different shells. (b) Draw the electronic structure of element X with atomic number 17'and element Y with atomic number 16


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(a) Bohr-Buiy Rules :
(i) The maximum no. of electrons present in a shell is given by the formula 2n^2 (where n is shell no.).
(ii) The maximum no. of electrons that can be accommodated in the outermost orbit is 8.