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InterviewSolution
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Summarise the rules for writing of distribution of electrons in various shells for the first eighteen elements. |
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Answer» Solution :The rules for writing the distribution of electrons in VARIOUS shells are as follows (1) The maximum number of electrons present in a shell is given by the FORMULA `2n^(2)` where N is the ORBIT number or energy level index, 1,2,3,.... The maximum number of electrons in different shells are first orbit or K shell will be `2 xx 1^(2)` = 2 . Second orbit or L shell will be 2` xx 2^(2) = 8` . Third orbit or M shell will be 2 `xx 3^(2) = 18`. Fourth orbit or N shell will be 2 ` xx 4^(2)` = 32 (2) The maximum number of electrons that can be accommodated in the outermost orbit is 8. (3) Electrons are not accommodated in a given shell, unless the inner shells are filled. i.e., shells are filled in a stepwise manner. Thus, eighteen electrons are accommodated as KLM 288 |
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