Study the extract of the Periodic table given below and answer the questions that follow. Give the alphabet corresponding to the element in question: DO NOT repeat an element.

(a) Which element forms an electrovalent compound with G?

(b) The ion of which element will migrate towards the cathode during electrolysis?

(c) Which non metallic element has the valency 2?

(d) Which is the inert gas?

(a) B

Reason — G is Group 17 halogen atom and it will form electrovalent bond with Group 1 metal B atom.

(b) A

Reason — A is a first group element. when it loses its electron it will form a cation and migrate towards cathode.

(c) E

Reason — E is a non metal which belongs to Group 16. Hence has the valency of 2.

(d) F

Reason — Here F is present in Group 18 and all Group 18 elements are inert gases.