Why does nitrogen show anomalous properties with respect to other elements in group 15?

Which of the following in air, forms compounds readily?

What is the total number of atoms or groups surrounding each phosphorus atom in its oxoacids?

What is one method of qualitatively analyzing a given salt for presence of ammonia?

Why is chlorine bubbled through water during the latter’s treatment?

Which of the following gas is used as Holmes signal?

What is formed when amphoteric oxides react with an alkali solution?

When a flask containing sodium thiosulfate is placed over a paper marked with ‘X’ and HCl added to it, the ‘X’ seems to …