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:

Step-by-step solution

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 . 74 V 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 acceptin