What type of chemical bond is present in chlorine molecule? Explain your answer.

21 What is the nature of charge on (i) a cation, and (ii) an anion? 22 Name the cation and anion present in MgCl₂ Also write their symbols. 23 Explain the formation of a chlorine molecule on the basis of electronic theory of valency. 24 Giving one example each, state what are (i) ionic compounds, and (ii)covalent compounds.