What is the nature of the bond between $B$ and $O$ in $(C_2H_5)_2OBH_3$?

Which of the following molecules does not have coordinate bonds?

Coordinate covalent compounds are formed by

The number of dative bonds in a molecule of sulfuric acid $(H_2SO_4)$ is.........

Which of the following is the correct representation of the reaction when $BF_3$ reacts with ammonia?
$(i)$ $F_3B + :NH_3 \rightarrow [F_3B \leftarrow :NH_3]$
(ii) $F_3B + :NH_3$ $\rightarrow [F_3B$ $\rightarrow :NH_3]$

$AlCl_3$ exists as a dimer because...