justjen justjen

31-03-2014
Chemistry

Answered

For each pair of ions, choose the one that has the smaller radius. Na+ or Mg2+ Cl- or K+

Verified Answer :

jydclix jydclix

31-03-2014

Mg2+...because it loses 2 electron which is on its valence shell making it empty and making it have jst 2 shells. The radius calculated from d nucleus to the new valence shell is then smaller than that of Cl^- and k+

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