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Which one of the lanthanoids given below is the most stable in divalent form?

Option 1 -

Ce (Atomic Number 58)

Option 2 -

) Sm (Atomic Number 62)

Option 3 -

Eu (Atomic Number 63)

Option 4 -

Yb (Atomic Number 70)

0 2 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • R

    Answered by

    Raj Pandey | Contributor-Level 9

    a month ago
    Correct Option - 4


    Detailed Solution:

    Valence shell electronic configuration of Eu in +2 O.S is,

      E u 2 + = 6 s 0 4 f 7  

    It has half filled f-sub shell and stable.

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