Atomic NumberAtomic Number of Thorium
Atomic Number of Thorium is 90.
Chemical symbol for Thorium is Th. Number of protons in Thorium is 90. Atomic weight of Thorium is 232.0377 u or g/mol. Melting point of Thorium is 1750 °C and its the boiling point is 4787 °C.
» Boiling Point » Melting Point » Abundant » State at STP » Discovery YearAbout Thorium
This element is a slightly radioactive soft metal discovered in the first half of the 19th century. Its name comes from the name of Thor who is a Scandinavian God of war. It can be extracted from various minerals known as thorites and thorianites, but not only. In nature, this element can be found in compounds with numerous other elements. The primary application of thorium is using it for producing nuclear power, and thorium nuclear technology is still relatively innovative. Thorium can also be used in alloys with other metals to produce strong steels, or it can find application as an industrial catalyst.
Properties of Thorium Element
| Atomic Number (Z) | 90 |
|---|---|
| Atomic Symbol | Th |
| Group | |
| Period | 7 |
| Atomic Weight | 232.0377 u |
| Density | 11.72 g/cm3 |
| Melting Point (K) | 2115 K |
| Melting Point (℃) | 1750 °C |
| Boiling Point (K) | 5061 K |
| Boiling Point (℃) | 4787 °C |
| Heat Capacity | 0.113 J/g · K |
| Abundance | 9.6 mg/kg |
| State at STP | Solid |
| Occurrence | Primordial |
| Description | Actinide |
| Electronegativity (Pauling) χ | 1.3 |
| Ionization Energy (eV) | 6.3067 |
| Atomic Radius | 180pm |
| Covalent Radius | no datapm |
| Valence Electrons | 2 |
| Year of Discovery | 1829 |
| Discoverer | Berzelius |