Explanation:
When an electron is removed from an atom then the atom acquires a positive charge.
Therefore, it results in the formation of a cation.
For example, calcium has atomic number 20 and its electronic distribution is 2, 8, 8, 2.
Therefore, it loses two electrons and changes into [tex]Ca^{2+}[/tex] ion. Hence, a neutral atom of calcium changes into cation.
Thus, we can conclude that when electrons are removed from an atom, the atom becomes positively charged and is referred to as a cation.
