Question

Question 6 Summarize the rules for writing of distribution of electrons in various shells for the first eighteen elements.

Class 9 - Science - Structure of the Atom Page 54

Answer 1

The distribution of elements in different orbits is governed by a scheme called Bohr-Bury scheme. There are following rules:

(i) The maximum number of electrons present in any shell is given by the formula In1.

Where n = no. of orbit.

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

(iii) Electrons in an atom do not occupy a new shell unless all the inner shells are completely filled.

Answer 2

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