If we talk about the gases in the Universe, Hydrogen is the only gas which is considered as the most abundant gas. It is a type of a chemical element which is represented with a symbol “H”. Its atomic number is 1 and atomic weight is 1.00794 u. In case of the periodic table, it is the lightest element in comparison to other elements. It was first recognized in the 16th century by “Henry Cavendish”.
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If we talk about the gases in the Universe, Hydrogen is the only gas which is considered as the most abundant gas. It is a type of a chemical element which is represented with a symbol “H”. Its atomic number is 1 and atomic weight is 1.00794 u. In case of the periodic table, it is the lightest element in comparison to other elements. It was first recognized in the 16th century by “Henry Cavendish”.