1.

In context of the lanthanoids, which of the following statement is not correct?

Answer»

Availability of 4f electrons RESULTS in the formation of compounds in +4 STATE of all the members of the series
There is a gradual DECREASE in the radii of the members with INCREASING atomic number in the series
All the members exhibit +3 oxidation state
Because of similar properties the separation of lanthanoids is not easy

Answer :A


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