# Which of the following statements is not correct ?

$\begin {array} {1 1} (A)\;\text{$LiAlH_4$and$LiGAH_4$are reducing agents in inorganic chemistry} \\ (B)\;\text{$BF_3$is a useful catalyst in Friedel - crafts reactions} \\ (C)\;\text{$LiAlH_4$is used as a reducing agent in organic chemistry for selectivity reducing the functional groups} \\ (D)\;\text{The fluorides of$Al$and$GA $are covalent in character} \end {array}$

The fluorides of $Al, Ga, In$ and $Tl$ are ionic in nature where the other halides are generally covalent and exists as dimers.
Hence (D) is the correct option.
The fluorides of Al and GA are covalent in character
edited Jul 28, 2014