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Q.

The non-metallic character ________________ down the group.

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a

increases

b

decreases

c

remains same

d

first increases then decrease

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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