Given below are two statements :

Statement (I) : In the Lanthanoids, the formation $$\mathrm{Ce}^{+4}$$ is favoured by its noble gas configuration.

Statement (II) : $$\mathrm{Ce}^{+4}$$ 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 :

Choose the correct option having all the elements with $$\mathrm{d}^{10}$$ electronic configuration from the following :

The incorrect statement regarding conformations of ethane is :

The final product A, formed in the following reaction sequence is: