Question.89 Given below are two statements:
Statement (I) : In the Lanthanoids, the formation of Ce^{+4} is favoured by its noble gas configuration.
Statement (II) : Ce^{+4} is a strong oxidant reverting to the common +3 state.
In the light of the above statements, choose the most appropriate answer from the options given below:
(1) Statement I is false but Statement II is true
(2) Both Statement I and Statement II are true
(3) Statement I is true but Statement II is false
(4) Both Statement I and Statement II are false
Ans. (2)
Explanation:
tatement (1) is true, Ce^{+4} has noble gas electronic configuration.
Statement (2) is also true due to high reduction potential for Ce^{4+} / Ce^{3+}(+1.74 ~V),
and stability of Ce^{3+}, Ce^{4+} acts as strong oxidizing agent.