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NEETChemistryd and f Block Elements

Why do the second and third d series exhibit similar radii and very similar physical and chemical properties?

Options

  1. ADue to the intervention of the 4f orbitals.
  2. BDue to the imperfect shielding of one electron by another in the same set of orbitals.
  3. CDue to the net electrostatic attraction between the nuclear charge and the outermost electron.
  4. DDue to the decrease in metallic radius.

Correct answer

A. Due to the intervention of the 4f orbitals.

Step-by-step solution

The second and third d series exhibit similar radii and properties because of the intervention of the 4f orbitals.

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