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MHT CET20243 May 2024Evening ShiftChemistryd and f Block ElementsActual

Identify the element having smallest ionic size in +3 state from following.

Options

  1. ANd
  2. BHo
  3. CSm
  4. DLu

Correct answer

D. Lu

Step-by-step solution

The phenomenon of lanthanide contraction is observed in case of 4 f elements due to an increase in the effective nuclear charge in lanthanides. Thus, the atomic and ionic radii decrease continuously from lanthanum ( Z=57 ) to lutetium (Z=71) .

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