Boron halides behave as Lewis acids because of their

In diborane,the $H-B-H$ bond angle is $120^o$. The hybridization of boron is likely to be

Which of the following is $NOT$ true regarding the structure of diborane $(B_2H_6)$?

In group $13$ of the long form of the periodic table, an element $X$ has a boiling point of $T_2 \ (K)$ and a melting point of $T_1 \ (K)$. Identify the element $X$ for which $T_2 - T_1 \ (K)$ is maximum.

Draw the structure of diborene $(B_2H_4)$.

Boron halides behave as Lewis acids because of their nature.