(a) X and Y belong to the same period in the Periodic Table is a group I element while Y belongs to group VII. State which of the elements would (i) be a good oxidizing agent (ii) have the smaller atomic volume (iii) have the higher ionization potential (b) Explain your answer in (a)(i) above.
Explanation
(a) (i) Element Y (ii) Element Y (iii) Element Y
(b) The element Y is in group VII and so it has a smaller atomic volume than element X which is in group I. This size of the atom is a measure of the atomic radius. The smaller the atom is, the more is the attractive force between the outermost electron and the nucleus and this is the reason why element Y will be a better acceptor of electron than X as oxidizing agent.