Aluminum form [AlF6]3 but boron does not form [BF6]3
Answers (2)
29th Mar, 2021
Hello,
Aluminium has vacant d-orbitals. So, it can expand its coordination number from 4 to 6. Thus, it forms octahedral [AlF6]3- ion in which Al undergoes sp3d2 hybridisation.
On the other hand, Boron does not have d-orbitals. Therefore, it can have a maximum coordination number of 4. So, boron can not form [BF6]3- ion.
Hope it helps!
Good luck!
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29th Mar, 2021
Aluminum is formed (AlF6) 3- because it has a d orbital in its valence shell, but boron does not have a d orbital in its valence electron. Therefore, the maximum boron covalence cannot exceed 4. Thus Aluminum can form [AlF6]3 but Boron can not form [BF6]3.
I hope this answer helps. All the very best for your future endeavors!
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