Atomic Number of Thorium

Thorium Atomic Number

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 Year

About 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 SymbolTh
Atomic Weight232.0377 u
Density11.72 g/cm3
Melting Point (K)2115 K
Melting Point (℃)1750 °C
Boiling Point (K)5061 K
Boiling Point (℃)4787 °C
Heat Capacity0.113 J/g · K
Abundance9.6 mg/kg
State at STPSolid
Electronegativity (Pauling) χ1.3
Ionization Energy (eV)6.3067
Atomic Radius180pm
Covalent Radiusno datapm
Valence Electrons2
Year of Discovery1829

What is the Boiling Point of Thorium?

Thorium boiling point is 4787 °C. Boiling point of Thorium in Kelvin is 5061 K.

What is the Melting Point of Thorium?

Thorium melting point is 1750 °C. Melting point of Thorium in Kelvin is 2115 K.

How Abundant is Thorium?

Abundant value of Thorium is 9.6 mg/kg.

What is the State of Thorium at Standard Temperature and Pressure (STP)?

State of Thorium is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Thorium Discovered?

Thorium was discovered in 1829.