What Colour is thorium?
Table of Contents
What Colour is thorium?
thorium (Th), radioactive chemical element of the actinoid series of the periodic table, atomic number 90; it is a useful nuclear reactor fuel. Thorium was discovered (1828) by Swedish chemist Jöns Jacob Berzelius. It is silvery white but turns gray or black on exposure to air.
Does thorium glow?
Thorium oxide (ThO2), one of thorium’s compounds, has many uses. This mantle, which also contains about 1\% cerium oxide, glows with a bright white light when it is heated in a gas flame. Thorium oxide has a very high melting point, about 3300°C, and is used to make high temperature crucibles.
Is thorium a solid?
Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90….
| Thorium | |
|---|---|
| Phase at STP | solid |
| Melting point | 2023 K (1750 °C, 3182 °F) |
| Boiling point | 5061 K (4788 °C, 8650 °F) |
| Density (near r.t. ) | 11.7 g/cm3 |
Is thorium a rare earth metal?
Rare earth elements, known as lanthanides and actinides on the periodic table, include 15 chemical elements with atomic numbers 57 through 71. Rare earth minerals are processed primarily from ores and minerals that naturally contain uranium and thorium.
Who discovered thorium?
Jöns Jacob Berzelius
Thorium/Discoverers
What happens if we eat thorium?
After you eat or drink thorium, almost all of it leaves your body in the feces. The small amount of thorium left in your body may enter your bones from the blood and stay there for many years. The main way thorium will enter your body is by breathing dust contaminated with thorium.
Is thorium a gas?
Why is radioactive green?
The alpha and/or beta particles from the radioactive material (radium, promethium, or tritium) strike molecules of a phosphor, typically zinc sulfide, which then emit green light. Most “glow-in-the-dark” items now use phosphorescent materials that need to be “charged” by exposure to light.
What family is thorium?
Thorium is a member of the actinide family. The actinide elements are located in Row 7 of the periodic table. They have atomic numbers between 90 and 103.
How much thorium is in the world?
Thorium is found in several minerals, including monazite, thorite, and thorianite. According to the Organisation for Economic Co-operation and Development’s Nuclear Energy Agency, worldwide identified thorium resources were estimated to total 6.4 million tons of thorium.