File:HEUraniumC.jpg · Wikimedia Commons · See Wikimedia Commons
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Also known as element 92, U
Uranium is a chemical element; it has symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium radioactively decays, usually by emitting an alpha particle. The half-life of this decay varies between 159,200 and 4.5 billion years for different isotopes, making them useful for dating the age of the Earth. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which
AI overview
Uranium is a naturally occurring silvery-grey metal that is radioactive, meaning its atoms gradually break down over time by releasing particles—a process that happens at different rates for different forms of uranium, with some taking billions of years to decay. Because of these different decay rates, uranium is useful for scientists to determine the age of the Earth, and uranium-235 and uranium-238 are the most common forms found in nature.
AI-generated from the Wikipedia summary — may contain errors.
Chemical data
- Formula
- U
- Molecular weight
- 238.0289 g/mol
- IUPAC name
- uranium
- SMILES
- [U]
- InChIKey
- JFALSRSLKYAFGM-UHFFFAOYSA-N
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Formal charge
- 0
via PubChem