At various times the following two sequences have been proposed for the elements to be included in
Question:
At various times the following two sequences have been proposed for the elements to be included in Group 3:
(a) Sc, Y, La, Ac,
(b) Sc, Y, Lu, Lr.
Because ionic radii strongly influence the chemical properties of the metallic elements, it might be thought that ionic radii could be used as one criterion for the periodic arrangement of the elements. Use this criterion to describe which of these sequences is preferred.
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Ionic radii can indeed be used as one criterion for the periodic arrangement of elements especially ...View the full answer
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Related Book For 
Inorganic Chemistry
ISBN: 9780198768128
7th Edition
Authors: Mark Weller, Tina Overton, Jonathan Rourke
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