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Q.

Non-metallic character __________ across a period from left to right.

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a

increases

b

decreases

c

remains the same

d

first increases then decrease

answer is A.

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Detailed Solution

  • On moving across a period in the periodic table the atomic size decreases and the nuclear charge increases.
  • Due to this, the pull of the nucleus on electrons increases.
  • So the tendency of an atom to lose electrons decreases.
  • The metallic character is the tendency of an element to lose electrons and forms positive ions or cations, so the metallic character decreases.
  • Since the metallic character decreases, the non-metallic character of the element increases.
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