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Most Important Selected Qs for JEE AdvancedChemistryd and f Block Elements

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

Options

  1. AAll the members exhibit +3 oxidation state
  2. BBecause of similar properties the separation of lanthanoids is not easy.
  3. CAvailability of 4f electrons results in the formation of compounds in +4 state for all the members of the seri
  4. DThere is a gradual decrease in the radii of the members with increasing atomic number in the series.

Correct answer

C. Availability of 4f electrons results in the formation of compounds in +4 state for all the members of the seri

Step-by-step solution

The general o.s of lanthanides is +3, only few elements exhibit +4 o.s.

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