Question

All of the following are true about ion EXCEPT:
(a)- Ions can be formed by adding an electron to a neutral atom
(b)- Ions can be formed by removing an electron from a neutral atom
(c)- Ions can be formed by removing a neutron from a neutral atom
(d)- Ions can be positive and negative in charge

Answer 1

Hint: Ions are of two types, cation and anion. The substance having a positive charge is a cation and the substance having a negative charge is an anion. Addition or subtraction of negative particles in the atom causes the formation of these charges.

Complete step by step answer:
An ion is formed only when the atom gains an electron or loses an electron.
Ions are of two types: cations or positively charged ions, and anions or negatively charged ions.
Formation if ions are only due to negatively charged particles known as an electron.
When the atom gains 1 electron, then the atom is converted into an anion having -1 charge (${{M}^{-}}$).
Similarly, when the atom gains 2 electrons, then the atom is converted into an anion having -2 charge (${{M}^{2-}}$).
 When the atom loses 1 electron, then the atom is converted into a cation having a +1 charge (${{M}^{+}}$ ).
Similarly, when the atom loses 2 electrons, then the atom is converted into a cation having a +2 charge (${{M}^{2+}}$).
So the addition of electrons leads to the formation of anion and the removal of an electron leads to the formation of the cation.
So, from the above discussion, we can say that electrons are involved in the formation of ions and ions are either negative or positive in charge.
So, the correct answer is “Option C”.

Note: The main motive of the atom to lose or gain electrons is to complete its octet and acquire the configuration of the nearest noble gas atom because a complete octet is the most stable. The charge on an electron is $-1.6\text{ x 1}{{\text{0}}^{-19}}C$.