Periodic table / Uranium

Overview

Uranium is a chemical element with symbol U and atomic number 92. It is a silvery-white metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.

Electron configuration

The electron configuration of Uranium is [Rn] 5f3 6d1 7s2, with electron shells of 2, 8, 18, 32, 21, 9, 2.

Physical and chemical properties

Uranium is classified as a actinide. It has an atomic mass of 238.029 and exists as a solid at standard conditions.

Real-world uses of Uranium

Uranium is an actinide studied primarily in nuclear science and research due to its radioactive properties.

Interesting facts about Uranium

• Uranium has the atomic number 92 and chemical symbol U.
• It belongs to period 7, group 3 of the periodic table.
• Uranium was discovered by Martin Heinrich Klaproth.

Explore Uranium interactively

Want to compare Uranium with other elements or see it highlighted on the full table? Open the interactive periodic table and click on U to explore properties, trends, and neighboring elements. You can also test your knowledge with our periodic table quiz game.