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NEETChemistryClassification of Elements and Periodicity in Properties

Consider the following statements regarding the trends in electronegativity of elements: I. Li II. F > Cl > Br > I III. Si > P > S > Cl IV. O > S > Se > Te How many of the given statements are correct?

Options

  1. A4
  2. B3
  3. C2
  4. D1

Correct answer

B. 3

Step-by-step solution

Electronegativity generally increases across a period from left to right and decreases down a group from top to bottom. Statement I is correct: Li , Be , B , and C belong to Period 2. Their electronegativity increases from left to right ( Li Statement II is correct: F , Cl , Br , and I belong to Group 17. Their electronegativity decreases down the group ( F > Cl > Br > I ). Statement III is incorrect: Si , P , S , and Cl belong to Period 3. Their electronegativity should increase from left to right, making the corr

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