Question

Borohydrides are prepared by reaction of metal hydrides with $B_2{H}_6$ in diethyl ether, select incorrect statement:

• A. Hybridisation of Boron changes
• B. Metal $M$ can be $LiorNa$
• C. Geometry around boron is tetrahedral in both reactant and product
• D. Boron hydrides are used as reducing agent

Answer 1

The correct option is A Hybridisation of Boron changes

$2MH+B_2{H}_6\to 2M^{+}\left[B{H}_4{]}^{-}\right\{M=LiorNa\}$

One hydride can be removed from $B{H}_4^{-}$ ion and acts as reducing agent.