Which of the following statements are correct ?

Options

A. When `BF_(3)` is treated with excess of NaF in acidic aqueous solution gives `NaBF_(4)`
B. When `BCl_(3)` is treated with excess of NaCl in acidic aqueous solution gives `H_(3)BO_(3)`
C. When `BBr_(3)` is treated with `NH(CH_(3))_(2)` in a hydrocarbon solvent gives `B[N(CH_(3))_(2)]_(3)`
D. When `B_(2)H_(6)` is treated with `BeH_(2)` he product formed is `Be(BH_(4))_(2)`

Answer

A, B, C, D

Explanation

`BF_(3)+NaF to NaBF_(4)` ,
`BCl_(3)+NaCl+H^(+)to H_(3)BO_(3)` ,
`B_(2)H_(6)+BeH_(2)+H^(+)to Be (BH_(2))_(2)`