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Q.

The non-metallic character ________________ down the group.

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a

decreases

b

first increases then decrease

c

remains same

d

increases

answer is B.

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Detailed Solution

On moving down a group in the periodic table the atomic size increases and the nuclear charge also increases.
The effect of increased atomic size is greater as compared to the increased nuclear charge.
An increase in the atomic size means the pull of the nucleus on electrons in the last orbit decreases.
Therefore tendency to lose electrons increases and elements can lose electrons easily.
The metallic character is the tendency of an element to lose electrons and form positive ions or cations.
As the metallic character increases, the non-metallic nature decreases down the group.

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