Which of the following statement is incorrect ?

Options

A. Anhydrous aluminium choride cannot be prepared by heating `AlCl_(3)6H_(2)O` because of hydrolysis of `AlCl_(3)`
B. Anhydrous `AlCl_(3)` is high melting solid whereas `AIF_(3)` is a low melting volatle solid .
C. Aluminium forms `[AIF_(6)]^(3-)` ion but boron does not form `[BF_(6)]^(3-)`
D. All thea three B-F Bond lenghts are equal `(1.30A^(0))` in `BF_(3)` and each of them is shorter than the sum of the covalelent radii of Boron `(0.8A^(0))` and fluorine `(0.72A^(0))`

Answer

2