Chemically inert

However, a large amount of energy is required to drive such reactions, usually in the form of heat, pressure, or radiation, often assisted by catalysts.

The resulting compounds often need to be kept in moisture-free conditions at low temperatures to prevent rapid decomposition back into their elements.

The presence of a strong triple covalent bond in the N2 molecule renders it unreactive under normal circumstances.

Neon gas in a vacuum tube glows bright red in colour when electricity is passed through.

Balloons filled with it float upwards and this phenomenon is achieved as helium gas is less dense than air.