A neutral atom of an element has a nucleus with nuclear charge 12 times and mass 24 times that of hydrogen. Calculate the number of electrons, protons and neutrons in its stable positively charged ion.

Explanation

(i) Number of electrons required to be present in the valence shell of an ion so that the ion beomes stable.
(ii) Subatomic particles that cause nuclear charge.
(iii) Number of subatomic particles
(iv) Electronic configuration of the stable ion that is formed.