Bonds present in $N_2O_5$ (nitrogen pentaoxide) are

$AlCl_3$ exists as a dimer because...

In $BF_3$,the $B-F$ bond length is $1.3 \ \mathring{A}$. When $BF_3$ reacts with $Me_3N$,it forms an adduct $Me_3N \to BF_3$. In this adduct,the $B-F$ bond length will be ..........

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

Total number of coordinate bonds present in $1$ molecule of $(NH_4)_3PO_4$ are:

Give the structure of gaseous $AlCl_3$.