Phosphorus pentachloride in the solid state exists as:

Discuss the general characteristics of Group $15$ elements with reference to their electronic configuration,oxidation state,atomic size,ionisation enthalpy and electronegativity.

Which of the phosphorus oxoacids can create a silver mirror from $AgNO_3$ solution?

Among the oxides of nitrogen,$N_2O$,$NO$,and $NO_2$,molecules with unpaired electrons are:

The strongest base is

On heating ammonium dichromate,the gas evolved is