Boron is unable to form BF6^(3-) ion bec...

Boron is unable to form `BF_6^(3-)` ion because of

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Due to non - availability of d orbitals, boron is unable to expand its octet.Therefore, the maximum covalence of boron cannot exceed 4 .

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Boron does not form B^(3+) ions whereas Al forms Al^(3+) ions. This is because

The size of B atom is larger than that of Al

The sum of `IE_(1) + IE_(2) + IE_(3)` of B is much higher than that of Al

The sum of `IE_(1) + IE_(2) + IE_(3)` of Al is much higher than that of B

Both 1 and 2

The electronegativity difference between boron and fluorine molecule

It is a covalent molecule

It is a tetra atomic molecule

It is having trigonal planar geometry.

Cilmacteric C

Quiescence

Dormancy

Scarification