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Why does boron not form the ion [BF₆]³⁻, although… | StemPy Lab
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Why does boron not form the ion [BF₆]³⁻, although aluminium forms [AlF₆]³⁻?
Chemistry
Medium
High School (11–12)
The p-Block Elements
Created by
StemPy Lab
Why does boron not form the ion
[
BF
6
]
3
−
[\text{BF}_{6}]^{3-}
[
BF
6
]
3
−
, although aluminium forms
[
AlF
6
]
3
−
[\text{AlF}_{6}]^{3-}
[
AlF
6
]
3
−
?
Fluoride ions are too large to fit around a boron atom of any kind
Boron has no d orbitals in its second shell, so its covalency cannot exceed 4
Boron has no vacant orbital
Boron is more electronegative than fluorine
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