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NTA Abhyas JEE Main2020ChemistryChemical Bonding and Molecular StructurePractice

The species that cannot exist is

Options

  1. AS i F 6 2 -
  2. BB F 6 3 -
  3. CS F 6
  4. DA l F 6 3 -

Correct answer

B. B F 6 3 -

Step-by-step solution

As Boron does not have d orbital in its valence orbit. Hence, maximum covalency of boron cannot exceed more than 4 so B F 6 3 - does not exist. Rest all exist as Si, S,Al have d- orbitals to exceed covalency more than 4.

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