Identify the element that has the larger atomic radius in each pair of the fol-lowing and mark it with a symbol tick mark.
(i) Mg, Ca (ii) Li, Cs (iii) N, P (iv) B, Al
i) Mg, Ca : Calcium has large atomic radius since Mg and Ca are in same group atomic radius increases from top to bottom in a group.
ii) Li or Cs : Cs has large atomic radius Li and Cs are also in same group.
iii) N or P : Phosphorous has large atomic radius. As N and P are also in group.
iv) B or AZ : Al has large atomic radius. B, Al are also in group.