Appearance
Atomic Number: 1
Relative Atomic Mass: 1.008
Hydrogen is a colourless gas
Source
Hydrogen is found in the Sun as a source for its nuclear reaction. It is the most abundant element in the Universe. On Earth, hydrogen is found in the greatest quantities in water. The atmosphere contains less than 1 part per million of hydrogen.
Commercially, hydrogen is produced by several methods.
These are: