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NEETChemistryd and f Block Elements

Which electrons are responsible for the lanthanoid contraction?

Options

  1. A4f electrons
  2. B5d electrons
  3. C5f electrons
  4. D6s electrons

Correct answer

A. 4f electrons

Step-by-step solution

The lanthanoid contraction is primarily attributed to the behavior of 4f electrons in the lanthanoid series.

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