1.

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):a3b4c5d6e7f8g9h10i11j12k13l14m15n16o17p18(i) Which element has a bigger atom, a or ƒ ?(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.

Answer»

(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) .



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