Technetium (Tc) — Element Properties, Uses & Facts
Overview
Technetium (/tɛkˈniːʃiəm/) is a chemical element with symbol Tc and atomic number 43. It is the element with the lowest atomic number in the periodic table that has no stable isotopes:every form of it is radioactive. Nearly all technetium is produced synthetically, and only minute amounts are found in nature.
Electron configuration
The electron configuration of Technetium is [Kr] 4d5 5s2, with electron shells of 2, 8, 18, 13, 2.
Physical and chemical properties
Technetium is classified as a transition metal. It has an atomic mass of 98 and exists as a solid at standard conditions, appearing as shiny gray metal.
Real-world uses of Technetium
As a transition metal, Technetium is typically used in alloys, industrial manufacturing, electronics, or as a catalyst in chemical reactions.
Interesting facts about Technetium
- Technetium has the atomic number 43 and chemical symbol Tc.
- It belongs to period 5, group 7 of the periodic table.
- Technetium was discovered by Emilio Segrè.
Explore Technetium interactively
Want to compare Technetium with other elements or see it highlighted on the full table? Open the interactive periodic table and click on Tc to explore properties, trends, and neighboring elements. You can also test your knowledge with our periodic table quiz game.
What is Technetium used for?
As a transition metal, Technetium is typically used in alloys, industrial manufacturing, electronics, or as a catalyst in chemical reactions.
What is the atomic number of Technetium?
The atomic number of Technetium is 43, meaning it has 43 protons in its nucleus.
What is the electron configuration of Technetium?
The electron configuration of Technetium is [Kr] 4d5 5s2.
Is Technetium a metal, nonmetal, or metalloid?
Technetium is classified as a transition metal.