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COMEDK20269 May 2026Evening ShiftChemistryChemical Bonding and Molecular StructureActual

The number of bond pairs and lone pairs of electrons in the molecule IF ₅ is:

Options

  1. A6, 0
  2. B4, 1
  3. C4, 2
  4. D5, 1

Correct answer

D. 5, 1

Step-by-step solution

The central atom in IF ₅ is Iodine (I). Number of valence electrons in Iodine = 7 . Number of Fluorine atoms bonded to Iodine = 5 . Each Fluorine atom forms a single bond with Iodine, so the number of bond pairs = 5 . Number of valence electrons used in bonding = 5 . Remaining valence electrons on Iodine = 7 - 5 = 2 . Number of lone pairs = 2 2 = 1 . Thus, the molecule IF ₅ has 5 bond pairs and 1 lone pair. Answer: 5, 1

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