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MHT CET202124 Sep 2021Evening ShiftChemistryd and f Block ElementsActual

Which element from following in +3 oxidation state forms colourless compounds?

Options

  1. ASc(Z=21)
  2. BTi(Z=22)
  3. CV(Z=23)
  4. DFe (Z=26)

Correct answer

A. Sc(Z=21)

Step-by-step solution

Sc ³⁺ 1 ~s ^2 2 ~s ^2 2 ~s ^6 3 ~s ^2 3 ~s ^6 3 ~d ^0 Sc ³⁺ ion will form colourless compounds as it does not contain unpaired electrons.

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