Question

A neutral atom has 2 electrons in its K shell, 8 electrons in its L shell and 2 electrons in its
Mshell. Find the atomic number of the element. Write the symbol of the ion that will be
obtained if the electrons in the M shell are removed from the atom.​

Answer 1

Answer:

the atomic number of element is 12 and the element is magnesium and the symbol of ion if the electrons in the M shell are removed is Mg2+

Answer 2

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.