$A$ simple example of a coordinate covalent bond is exhibited by

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) $F_3B + :NH_3$ $\rightarrow [F_3B$ $\rightarrow :NH_3]$

Which of the following compounds forms a dative bond with ammonia?

Which of the following compounds contains a coordinate covalent bond?

What is the number of dative bonds in a sulfuric acid molecule?

The bond that exists between $NH_3$ and $BF_3$ is called