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NEET 2002
Exam
NEET
Year
2002
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

NEET 2002 · Chemistry · Classification of Elements and Periodicity in Properties

Which of the following statement is true?

Which of the following statement is true?

Options

  1. ASilicon exhibits 4 coordination numbers in its compound
  2. BBond energy of F2\mathrm{F}_2 is less than Cl2\mathrm{Cl}_2
  3. CMn\mathrm{Mn} (III) oxidation state is more stable than Mn(\mathrm{Mn}(\mathrm{II})) in an aqueous state
  4. DElements of 15 th group show only +3 and +5 oxidation states

Correct answer

B. Bond energy of F2\mathrm{F}_2 is less than Cl2\mathrm{Cl}_2

Step-by-step solution

Fluorine is an exception due to its extremely small size. The F-F bond length is so short that the lone pairs of electrons on the fluorine atoms repel each other and weakens the F-F bond. The order of Bond energy is, Cl2>\mathrm{Cl}_2> Br2>F2>\mathrm{Br}_2>\mathrm{F}_2>\mathrm{I}2_2
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