In the following table, the positions of six elements A, B, C, D, E and F are given as they are in the Modern Periodic Table:On the basis of the above table, answer the following questions:(i) Name the element which forms only covalent compounds.(ii) Name the element which is a metal with valency three.(iii) Name the element which is a non-metal with valency three.(iv) Out of B and C, whose atomic radius is bigger and why?(v) Write the common name for the family to which the elements D and F belong.

In the following table, the positions of six elements A, B, C, D, E an

1.	In the following table, the positions of six elements A, B, C, D, E and F are given as they are in the Modern Periodic Table:On the basis of the above table, answer the following questions:(i) Name the element which forms only covalent compounds.(ii) Name the element which is a metal with valency three.(iii) Name the element which is a non-metal with valency three.(iv) Out of B and C, whose atomic radius is bigger and why?(v) Write the common name for the family to which the elements D and F belong.
Answer» (i) E (ii) B (iii) C (iv) B, because atomic radius decreases from left to right due to increase in the nuclear charge. (v) Noble gases