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08/10/2021 7:30 pm
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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)
1 Answer
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08/10/2021 7:30 pm
(a) Mg since atomic size decreases from left to right in a period.
(b) K since atomic size increases on going down a group.