Question

summarise the rule for writing the distribution of electrons various cells for a first 18 elements

Answer 1

the rule is K orbit=2electrons
L orbit=8electrons
M orbit=8electrons

Answer 2

There are 2 electrons,8 elections and 8 electrons in first,second,and third shell respectively. So for 1st 18 elements, there elections are started filling from first shell. For example- carbon- it has 6 electrons so 2 electrons will fit in first shell and 4 in second. Similarly calcium has 20 electrons so 2 electrons in first shell,8 electrons in second ,8 in third and finally 2 left which will fit in 4th

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