NEET Solved Paper 2017 Question 41

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

Options:

A) 4f and 5d levels being close in energies

B) The radioactive nature of actinoids

C) Actinoid contraction

D) 5f, 6d and 7s levels having comparable energies

Show Answer

Answer:

Correct Answer: D

Solution:

  • The correct option is D 5f, 6d and 7s levels having comparable energies Actinoids have a greater range of oxidation states due to comparable energies of 5f, 6d and 7s orbitals. Hence, all their electrons can take part in bond formation.