s2- has a completely filled k ,l and m shell find its atomic no.
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atomic number of an element is the no. of proton in the nucleus of the atom
sulphur has 16protons in it's nucleus so it's atomic number is 16
sulphur has 16protons in it's nucleus so it's atomic number is 16
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M shell has 6 electrons..
It need 2 more electrons in that shell
It need 2 more electrons in that shell
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