For the main group of the periodic table, the metallic properties of the elements vary approximately with their position as shown in the table.

1 2 13 14 15 16 17 18

H He

A B

C D

(i) Will the most metallic element be found at A, B, C or D?
(ii) Will the most non-metallic element be found at A, B, C or D?

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Solution

(i) The metallic character of metals increases on moving down the group and decreases on moving towards right along a period. Hence, the most metallic element will be found at C.

(ii) The non-metallic character of elements decreases on moving down the group and increases on moving towards right along a period. Hence, the most non-metallic element will be found at B.

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