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NEET 2017
Exam
NEET
Year
2017
Subject
Chemistry
Chapter
d and f Block Elements

NEET 2017 · Chemistry · d and f Block Elements

The reason for greater range of oxidation states in actinoids is...

The reason for greater range of oxidation states in actinoids is attributed to

Options

  1. Athe radioactive nature of actinoids.
  2. Bactinoid contraction.
  3. C5f,6dand7s5f, 6dand7s levels having comparable energies.
  4. D4fand5d4fand5d levels being close in energies.

Correct answer

C. 5f,6dand7s5f, 6dand7s levels having comparable energies.

Step-by-step solution

The minimum energy gap between 5f,6d and 7s5f, 6d \text{ and } 7s subshell. That's why e−{e}^{-} excitation will be easier.
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