The Periodic Table/1 - Hydrogen (H)

Element Hydrogen (H, 1)

Here you can read more about the chemical element Hydrogen. Its shemical symbol is H and its atomic number is 1. The relative atomic mass of Hydrogen is 1.00794 u. The elemental classification of Hydrogen is Diatomic nonmetals, and it belongs to group 1 and period 1 in the Periodic Table of Elements.

The density of Hydrogen is 0.0899 kg/m3. The melting point of Hydrogen is 14.03 Kelvin (-258.97 ℃). The boiling point of Hydrogen is 20.27 Kelvin (-252.73 ℃). Hydrogen was discovered in the year 1766 by Henry Cavendish.

To the right (or below if you are using a mobile device with a smaller screen) you will find the information given above for the element Hydrogen ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.

Data about element Hydrogen

Chemical symbol
Element classification
Diatomic nonmetals
Atomic number
Relativ atomic mass
Atomic mass
1.00794 u
0.0899 kg/m3
Melting point
14.03 K   (-258.97 ℃)
Boiling point
20.27 K   (-252.73 ℃)
Discovered year
Discovered by
Henry Cavendish