Correct Lewis acidity order of $BX_3$ is
$BF_3 < BCl_3 < BBr_3 < BI_3$
$BF_3 > BCl_3 > BBr_3 > BI_3$
$BCl_3< BBr_3 < BI_3 < BF_3$
$BF_3 < BI_3 < BBr_3 < BCl_3$
$BF _3\,< \,BCl _3\,<\, BBr _3$
Draw the structures of $BCl_3. NH_3$ and $AlCl_3$ (dimer).
In diborane, the two $H – B – H$ angles are nearly
Which of the following is correct ?
A compound $(A)$ of boron reacts with $NMe_3$ to give an adduct $(B)$ which on hydrolysis gives a compound $(C) $ and hydrogen gas. Compound $(C)$ is an acid. Identify the compounds $A, B$ and $C.$ Give the reactions involved.
Give suitable laboratory preparation for diborane.
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