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Hydrogen (H): Fun Facts and Information About the Element

What is the symbol? H
What is the atomic number? 1
What is the atomic weight? 1.0079
What is the melting point in Celsius? -259
What is the boiling point in Celsius? -253
What is the density (g/cm3) 0.09
What percent of the Earth’s crust? 0.14
What year was it discovered? 1776
Who discovered the element? Henry Cavendish
What group is the element in? 1
What is the electron configuration? 1s1
What is the ionization energy? 13.5984
What element category is it in? Other nonmetals

Where is Hydrogen Found?

This element is found in the stars, and plays an important part in powering the universe through both the proton-proton reaction and carbon–nitrogen cycle. Stellar hydrogen fusion processes release massive amounts of energy by combining hydrogens to form Helium.

How is Hydrogen Used?

Great quantities of hydrogen are required commercially for nitrogen fixation using the Haber ammonia process, and for the hydrogenation of fats and oils. It is also used in large quantities in methanol production, in hydrodealkylation, hydrocracking, and hydrodesulfurization. Other uses include rocket fuel, welding, producing hydrochloric acid, reducing metallic ores, and filling balloons.