Q24 of 52 Page 38

Which one of the following does not increase while moving down the group of the periodic table?

Elements that belong to the same group has same number of valence electrons. Thus the valency of elements remains the same.

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22

The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?

 23

Which one of the following depict the correct representation of atomic radius(r) of an atom?


 25

On moving from left to right in a period in the periodic table, the size of the atom.

 26

Which of the following set of elements is written in order of their increasing metallic character?