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NEETChemistryp Block Elements (Group 13 & 14)

Explain the following: Aluminium forms [AlF₆]³⁻ ion but boron does not form [BF₆]³⁻ ion.

Options

  1. AAluminium has a larger atomic radius than boron
  2. BAluminium has more available valence electrons compared to boron
  3. CAluminium has a lower effective nuclear charge than boron
  4. DAluminium has a higher ionization energy than boron

Correct answer

C. Aluminium has a lower effective nuclear charge than boron

Step-by-step solution

Correct Option is : (C) Aluminium has a lower effective nuclear charge than boron

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