Meaning of HYDROGEN in English


Name: hydrogen

Symbol: H

Atomic number: 1

Atomic weight: 1.00794 (7) g m r

Group in periodic table: 1

Group name:

Period in periodic table: 1

Block in periodic table: s-block

CAS registry ID: 1333-74-0

Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up about about 90% of the universe by weight. Hydrogen as water (H2O) is absolutely essential to life and it is present in all organic compounds. Hydrogen gas was used in lighter-than-air balloons for transport but is far too dangerous because of the fire risk (Hindenburg).

Chemistry of the elements English vocabulary.      Английский словарь химии элементов.