In each of the following pairs, choose the atom having the bigger size – InterviewSolution

1.

In each of the following pairs, choose the atom having the bigger size :(a) Mg (At. No.12) or Cl (At. No. 17)(b) Na (At. No. 11) or K (At. No. 19)

Answer»

(a) Mg since atomic size decreases from left to right in a period.

(b) K since atomic size increases on going down a group .

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