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Question: Answered & Verified by Expert
More number of oxidation state are exhibited by the actinoids, than by lanthanoids. The main reason for this is
Chemistryd and f Block ElementsCOMEDKCOMEDK 2015
Options:
  • A greater metallic character of lanthanoids than that of their corresponding actinoids
  • B more active nature of actinoids
  • C more energy difference between $5 f$ and
    $6 d$-orbitals, than that between $4 f$ and $5 d$-orbitals
  • D lesser energy difference between $5 f$ and $6 d$-orbitals, than that between $4 f$ and $5 d$-orbitals
Solution:
1097 Upvotes Verified Answer
The correct answer is: lesser energy difference between $5 f$ and $6 d$-orbitals, than that between $4 f$ and $5 d$-orbitals
More number of oxidation state are exhibited by the actinoids, than by lanthanoids. The main reason for this is lesser energy difference between $5 f$ and $6 d$-orbitals, than that between $4 f$ and $5 d$-orbitals.

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