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Periodic Classification and Periodic Properties - Result Question 46
43. Arrange the following ions in order of their increasing radii $Li^{+}, Mg^{2+}, K^{+}, Al^{3+}$.
(1997, 1M)
Show Answer
Solution:
- $K ^ {+} < Mg ^ {2+} < Al ^ {3+} < Li ^ {+}$. Size decreases from left to right in a period and it increases from top to bottom in a group. Variation is more pronounced in group than in period.





