A part of the Periodic Table has been shown below:

A part of the Periodic Table has been shown below:

Answer the following questions on the basis of position of elements in the above table.
(i) Which element is a noble gas ? Give reason.
(ii) Which element is most electronegative ? Give
reason.
(iii) Write the electronic configuration of (a) B and
(b) E.

(i) G - It is a noble gas and has zero valency.
(ii) E - Smallest atomic size and more electron affinity.
(iii) (a) 2,8,1 (b) 2,7