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AIEEE 2011 Solved Paper

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Question : 20

Total: 91

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

All the members exhibit +3 oxidation state
Because of similar properties the separation of lanthanoids is not easy.
Availability of 4f electrons results in the formation of compounds in +4 state for all the members of the series.
There is a gradual decrease in the radii of the members with increasing atomic number in the series.

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