Active nitrogen can be made by passing an electric spark through `N_(2)` gas

Options

A. at ordinary pressure
B. at a very low temperature
C. at a very low pressure (2 mm Hg)
D. at a high pressure

Answer

3

Explanation

When the electric discharge is allowed to pass thorugh diintrogen under very low pressure (about `2`mm `Hg`) a brilliant yellow pink luminescense is observed which persists for some time after stoppage of the discharge .It is observed that dinitrogen after the discharge is more active this from of nitrogen is termed active nitrogen and it contains some nitrogen in the atomic state.
It reacts readily with number of metals to form nitrides. It reacts with many nometals such as sulphur ,phosphorous iodine etc. It is able to break many normally stable molecules.