Nitrogen is used to fill electric bulbs because

Options

A. it is provides good illumination
B. it does not support combustion
C. it is heavier than air
D. it is highly reactive

Answer

2

Explanation

Dinitrogen does not burn or support combustion .It is extremely unreactive towards most elements and compounds because of the stability of nitrogen -nitrogen triple bond. The `N equiv N` bond enthalpy is `942" kJmol"^(-1)` compared with `167" kJmol"^(-1)` for the `N-N` bond enthalpy.
Thus `N_(2)(g)` is used to provide an inert atmosphere during welding and for certain metallurgical processes where oxidation might otherwise occur and for filling electrical lamps.