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MHT CET20228 Aug 2022Evening ShiftChemistryd and f Block ElementsActual

Which among the following elements do not have any electron in f - sub shell either in expected or in observed state electronic configuration?

Options

  1. ALu ( Z =71)
  2. BLa ( Z =57)
  3. CEu ( Z =63)
  4. DNd ( Z =60)

Correct answer

B. La ( Z =57)

Step-by-step solution

aligned & La =[ Xe ] 5 ~d ^1 6 ~s ^2 & Z =57 aligned

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