Coordination CompoundHard
Question
Which one of the following statements concerning lanthanide elements is false ?
Options
A.Lathanides are separated from one another by ion exchange method
B.The ionic radii of trivalent lanthanides steadly increase with increase in atomic number
C.All lanthanides are highly dense metals
D.Most characteristic oxidation state of lanthnides +3
Solution
The ionic radii of trivalent lanthanides decreases progressively with increase in atomic number. This decrease is known as lanthanide contraction.
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