The dand fblock elements - Result Question 71

####71. The reason for greater range of oxidation states in actinoids is attributed to :-

[2017]

(a) actinoid contraction

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

(c) 4f and 5d levels being close in energies

(d) the redioactive nature of actinoids

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Solution:

  1. (b) Minimum or comparable energy gap between 5f,6d and 7s subshell makes electron excitation easier, hence there is a greater range of oxidation states in actinoids.


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