A di-positive ion has an electronic arrangement 2,8,8 . Find out the number of electrons, protons and neutrons in that element if its mass number is 40.

Explanation

(i) Calculation of the atomic number of the element.
(ii) Calculation of the number of electrons in a neutral atom based on the configuration of positive ion.
(iii) The atomic number of a neutral atom
(iv) The number of neutrons in a neutral atom based on mass number.
(v) 20,20,20