What is the electronic configuration of element, whose atomic no. is 38 ?? And tell me that if the ans is 2,8,18,8,2 then in the 3rd shell i.e. M shell the maximum electrons should be 8 then how 18 will be there but if there should be 18 electrons then in N shell also must be 32 electrons then why there is in configuration there is only capacity of 8 electrons????

 Strontium, with atomic number 38 has an electronic configuration of 2,8,18,8,2.
The concept regarding filling of electrons in different shells and rules for the same shall be learnt by you in higher classes in details.
the maximum electrons that M shell can hold is 18.
Hope it clears your doubts

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