This WebElements periodic table page contains reactions of elements for the element thorium

Thorium is an electropositive actinide whose chemistry is dominated by the +4 oxidation state; it is quite reactive and can ignite in air when finely divided. All known thorium isotopes are unstable.

With more thorium than uranium available, it would be cheaper to make electricity with thorium than uranium. The most common ores of thorium are thorite and monazite.

Jan 28, 2026 · The nuclei of other heavy elements, such as thorium and protactinium, also were shown to be fissionable with fast neutrons; and other particles, such as fast protons, deuterons, and alphas, …

May 29, 2024 · Thorium react slowly with water; thorium can react with concentrated nitric acid and hydrogen chloride. Thorium can react with the majority of other chemical elements.

Thorium is named after Thor, the Scandinavian god of war. Element Thorium (Th), Group 20, Atomic Number 90, f-block, Mass 232.038. Sources, facts, uses, scarcity (SRI), podcasts, alchemical …

Applications of thorium include some special magnesium alloys and photosensors. The oxide is used in high-quality lenses. An isotope of thorium can be "bred" into uranium-234 by bombardment with slow …

Many compounds of thorium are known: this is because thorium and uranium are the most stable and accessible actinides and are the only actinides that can be studied safely and legally in bulk in a …

May 31, 2024 · Thorium is a highly reactive and electropositive metal. With a standard reduction potential of 21.90 V for the Th41/Th couple, it is slightly more electropositive than zirconium or …

Thorium is chemically reactive and is attacked by oxygen, hydrogen, the halogens and sulfur.