Name the cation and anion present in MgCl₂ Also write their symbols.

22 What is an ion? Explain with examples. 21 What is the nature of charge on (i) a cation, and (ii) an anion? 23 What type of chemical bond is present in chlorine molecule? Explain your answer. 23 Explain the formation of a chlorine molecule on the basis of electronic theory of valency.