$BiCl_3$ on hydrolysis forms a white precipitate of

Which element of the $13^{th}$ group does not show the group oxidation state in its compounds?

Which of the following statements about white phosphorus is false?

$P_4O_{10}$ is not used to dry $NH_3$ gas because

Reaction of ammonia with excess $Cl_2$ gives:

$A$ gas at low temperature does not react with most compounds. It is almost inert and is used to create an inert atmosphere in bulbs. The combustion of this gas is exceptionally an endothermic reaction. Based on the given information,we can conclude that the gas is