Q.

What is the trend of electronegativity across a period?

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a

increases from left to right

b

decreases from left to right

c

remains same throughout

d

increases first then decrease

answer is A.

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Detailed Solution

  • The tendency of an atom in a molecule to attract the shared pair of electrons toward itself is called its electronegativity.
  • Since the nuclear charge increases due to an increase in the atomic number, electronegativity increases from left to right in a period.
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What is the trend of electronegativity across a period?