1. Ionic form is formed when one or more electrons from the valence shell of an atom (electropositive metal ) are completely transferred to the valence shell of another atom (electronegative non-metal). Ionic bonding is the complete transfer of valence electron(s) between oppositely charged atoms.
For example NaCl (sodium chloride ) is an ionic bond, in which valence electron from Na gets completely transferred to the valence shell of Cl and ionic bond is formed between opposite ions that is Na (positive) and Cl (negative).
[tex] Na^{+}(cation) + Cl^{-}(anion)\rightarrow Ionic bond [/tex]
So option 'C' is correct choice.
2. A neutral atom can lose or gain an electron.
If the neutral atom loses an electron it will become ion with positive charge known as 'Cation'
If the neutral atom gains an electron it will become ion with negative charge known as 'Anion'
So an ion which positive charge is called 'Cation' , option B is correct.
