Given below are two statements :

Statement I : The E^o value for Ce⁴⁺ / Ce³⁺ is + 1.74 V.

Statement II : Ce is more stable in Ce⁴⁺ state than Ce³⁺ state.

In the light of the above statements, choose the most appropriate answer from the options given below :

In chromotography technique, the purification of compound is independent of :

Given below are two statements :

Statement I : H₂O₂ can act as both oxidising and reducing agent in basic medium.

Statement II : In the hydrogen economy, the energy is transmitted in the form of dihydrogen.

In the light of the above statements, choose the correct answer from the options given below :

A group of 15 element, which is a metal and forms a hydride with strongest reducing power among group 15 hydrides. The element is :