Question

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1) a neutral atom has 2 electrons in it k shell.8 electrons in its l shell and 2 electrons in its m shell. Find the atomic number of the element write the symbol of the electrons in its m shell are removed from the atom.

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Answer 1

$\huge\underline\mathbb\pink{Question :-}$

A neutral atom has two electrons in it 'K' shell. Eight electrons in its 'L' shell and two electrons in its 'M' shell.

A neutral atom has two electrons in it 'K' shell. Eight electrons in its 'L' shell and two electrons in its 'M' shell. Find the atomic number of the element write the symbol of the electrons in its m shell are removed from the atom.

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Now,

K shell can accommodate = 2 electrons

L shell can accommodate = 8 electrons

And,

We have been given that M shell has 2 electrons.

Hence,

The electronic configuration of this element becomes = 2,8,2.

Thus,

The number of electrons in its aton is :-

2+8+2 = 12 Answer