Comparative characteristics of hydrogen and oxygen.

Hydrogen and oxygen are colorless and odorless gases under normal conditions. The molecule of both consists of two atoms connected by a covalent non-polar bond. Hydrogen is the lightest gas and does not support combustion. Distributed in the Universe. Boiling point -252.70C. Oxygen is a heavier gas (heavier than air) and supports combustion, oxidation and life on planet Earth. The boiling point is -182.60C.



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