The Periodic Table/72 - Hafnium (Hf)

Element Hafnium (Hf, 72)

Here you can read more about the chemical element Hafnium. Its shemical symbol is Hf and its atomic number is 72. The relative atomic mass of Hafnium is 178.49 u. The elemental classification of Hafnium is Transition metals, and it belongs to group 4 and period 6 in the Periodic Table of Elements.

The density of Hafnium is 13290 kg/m3. And the mineral hardness of Hafnium is 5.5 Mohs. The melting point of Hafnium is 2420 Kelvin (2147 ℃). The boiling point of Hafnium is 5700 Kelvin (5427 ℃). Hafnium was discovered in the year 1922 by Dirk Coster and George de Hevesy.

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 Hafnium ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.

Data about element Hafnium

Chemical symbol
Element classification
Transition metals
Atomic number
Relativ atomic mass
Atomic mass
178.49 u
13290 kg/m3
Melting point
2420 K   (2147 ℃)
Boiling point
5700 K   (5427 ℃)
Mineral hardness
5.5 Mohs
Discovered year
Discovered by
Dirk Coster och George de Hevesy