The dand fblock elements - Result Question 79
####79. The correct order of ionic radii of
[2003]
(a)
(b)
(c)
(d)
(Atomic nos.
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Solution:
- (c) In lanthanide series there is a regular decrease in the atomic as well as ionic radii of trivalent ions
as the atomic number increases. Although the atomic radii do show some irregularities but ionic radii decreases from to .