The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers. (The letters given here are not the chemical symbols of the elements):
a b c d e f g h
3 4 5 6 7 8 9 10
i j k l m n o p
11 12 13 14 15 16 17 18
(i) Which element has a bigger atom, a or f?
(ii)Which element has a higher valency, k or o?
(iii) Which element is more metallic, i or k?
(iv) Which element is more non-metallic, d or g?
(v) Select a letter which represents a metal of valency 2.
(vi) Select a letter which represents a non-metal of valency 2.
(i) a (size decreases from left to right in a period).
(ii) k (valency of k = 3; valency of o = 1).
(iii) i (metallic character decreases from left to right in a period).
(iv) g (non-metallic character increases from left to right in a period)
(v) b (or j)
(vi) f (or n)