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:

Question

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:

Quantrex Academy · Accepted Answer

Correct answer: B. Both Statement I and Statement II are true

Statement (1) is true, Ce ^ + 4 has noble gas electronic configuration. Statement (2) is also true. The formation of Ce ^ 4 + is favoured by its noble gas configuration, but it is a strong oxidant reverting to the common + 3 state. The E ^ o value for Ce ^ 4 + / Ce ^ 3 + is + 1 . 74V which suggests that it can oxidise water. However, the reaction rate is very slow and hence Ce ( IV ) is a good analytical reagent. An oxidising agent is a substance that oxidises other substances involved in the reaction by gaining or accepting electrons from them. It is also referred to as an oxidiser or oxidant. Hence, both the statements are correct.

Given below are two statements: Statement (I) : In the Lanthanoids,...

Options

Correct answer

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