A netural atom has 2 electron in its k shell .8 electron in its l shell and 2 eletron in its M shell. find the atomic number of the element . write the system of the ion that will be obtained if the electron in the M shell are removed from the atom.
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Answer: Now, K shell can accommodate 2 electrons, L shell can accommodate 8 electrons adn we have been given that M shell has 2 electrons. So, the electronic configuration of this element becomes 2,8,2. Thus, the number of electrons in its aton is 2+8+2=12.
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