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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 of the distribution of etectrons in various shells for the first EIGHTEEN elements are given below. `to`Ifn gives the number of orbit or energy level, then `2N^(2)` gives the maximum number of electrons possible in a given orbit or energy level. THUS,First orbit or K-shell will have 2 electrons, Second orbit or L-shell will have 8 electrons, Third orbit or M-shell will have 18 electrons. `to`If it is the outermost orbit, then it should have not more than 8 electrons. `to ` There should be step-wise filling of electrons in different orbits, ie. electrons are not accompanied in a given orbit if the earlier orbits or shells are incompletely filled |
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