The chief constituent of natural gas is methane (CH4). It is a colorless, odorless, and flammable gas that is lighter than air. Methane is the simplest hydrocarbon and is the main component of natural gas. It is also produced by the decomposition of organic matter in landfills, swamps, and other anaerobic environments. Methane is a greenhouse gas and is a major contributor to climate change.
Helium (He) is a colorless, odorless, and non-flammable gas that is lighter than air. It is the second most abundant element in the universe, after hydrogen. Helium is produced by the decay of radioactive elements in the Earth’s crust. It is used in balloons, blimps, and other lighter-than-air vehicles. It is also used in cryogenics, superconductivity, and nuclear fusion.
Nitrogen (N2) is a colorless, odorless, and non-flammable gas that is about 78% of the Earth’s atmosphere. It is a diatomic molecule that is very stable. Nitrogen is used in fertilizers, explosives, and other industrial applications.
Propane (C3H8) is a colorless, odorless, and flammable gas that is heavier than air. It is a hydrocarbon that is produced from natural gas or petroleum. Propane is used in cooking, heating, and other applications.
In conclusion, the chief constituent of natural gas is methane.