Write the physical properties of $C_6H_5N_2Cl$ (benzenediazonium chloride).

(N/A) $C_6H_5N_2Cl$ is a colourless crystalline solid.
It is readily soluble in water and is stable in cold conditions,but it reacts with water when warmed.
It decomposes easily in the dry state.
$C_6H_5N_2BF_4$ (benzenediazonium fluoroborate) is water-insoluble and stable at room temperature.