Question

State Bohr- Bury rules for the distribution of electrons in different energy levels.
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Answer 1

Electrons closest to the nucleus will have the lowest energy. Electrons further away from the nucleus will have higher energy. An atom's electron shell can accommodate 2n2 electrons (where n is the shell level). In a more realistic model, electrons move in atomic orbitals, or subshells.

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Answer 2

Answer:

(a) Bohr Bury Rules:

(i) The maximum number of electrons present in a shell is given by the formula 2n² (where n is shell no.)

(ii) The maximum number of electrons that can be accommodated in the outermost orbit is 8.

(iii) Electron are not accommodated in a given shell, unless the inner shells are filled.

(b) (1) Element X: At No. = 17; E.C = 2,8,7

(ii) Element Y: At. No.= 16; E.C. = 2, 8, 6