D And F Block Elements Question 6
Question 6 - 2024 (27 Jan Shift 2)
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
Show Answer
Answer (2)
Solution
Statement (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.
