Question

2.
A neutral atom has 2 electrons in its 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 ion that will be
obtained if the electrons in the M shell are removed from the atom.​

Answer 1

Explanation:

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

Answer 2

Answer:

magnisium is the element having electronic configuration 2,8,2 with atomic number 12.

after removing 2 electrons from M shell it's symbol will be Mg^2+ .