in the atmosphere. They are extremely stable and have a small tendency to gain or lose electrons. Sodium per xenate is very much known for its strong oxidizing property. The inertness of noble gases is an important feature of their practical uses.
XII XII - - - - EVALUATION Choose the best answer: . In which of the following , NH is not used? a) Nessler’s reagent b) Reagent for the analysis of IV group basic radical c) Reagent for the analysis of III group basic radical d) Tollen’s reagent . Which is true regarding nitrogen?
a) least electronegative element b) has low ionisation enthalpy than oxygen c) d- orbitals available d) ability to form p p π π bonds with itself . An element belongs to group and rd period of the periodic table, its electronic configuration would be a) 1s 2s 2p b) 1s 2s 2p c) 1s 2s 2p 3s 3p d) 1s 2s 2p 3s 3p . Solid (A) reacts with strong aqueous NaOH liberating a foul smelling gas(B) which spontaneously burn in air giving smoky rings. A and B are respectively a) P (red) and PH b) P (white) and PH c) S and H S d) P (white) and H S .
On hydrolysis, PCl gives a) H PO b) PH c) H PO d) POCl . P O reacts with cold water to give a) H PO b) H P O c) HPO d) H PO . The basicity of pyrophosphorous acid ( H P O ) is a) b) c) d) XII XII - - - - . The molarity of given orthophosphoric acid solution is 2M.
its normality is a) 6N b) 4N c) 2N d) none of these .