Explain the origin of simple organic compounds on the primitive earth.

Explanation

Early earth had innumerable free atoms of all those elements, which were essential for the formation of protoplasm Free atoms combined to form molecules and simple inorganic compounds. The primitive atmosphere contained gases like `CO_2 CO, N_2 H_2` etc. The nitrogen and carbon of the atmosphere combine with metallic atoms, forming nitrides and carbides water vapour and metallic carbides reacted to form the first organic compounds, methane `(CH_4)`. Later on hydrogen cyanide was formed.