Uranium
| Element | Uranium |
| Symbol | U |
| Atomic Number | 92 |
| Molar Mass | 238.03 g mol-1 |
| Electron Configuration | [Rn]5f36d17s2 |
| Normal State | solid metal |
| Density @STP | 18.95 g cm-3 |
| Melting Point | 1135oC |
| Boiling Point | 4131oC |
| Stable Isotopes | 234U, 235U, 238U |
| Atomic Radius | 138 pm |
| Ionic Radius | 80 (6+) pm |
| Electronegativity (Pauling) | 1.38 |
| Ionization Energy (1st) | 584 kJ mol-1 |
| Ionization Energy (2nd) | 1420 kJ mol-1 |
| Ionization Energy (3rd) | 1843 kJ mol-1 |
| Molar Heat Capacity | 27.7 J K-1mol-1 |
| Standard Molar Entropy | 50.2 J K-1mol-1 |
| Enthalpy of Fusion | 15.5 kJ mol-1 |
| Enthalpy of Vapourization | 422.6 kJ mol-1 |
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- Uranium is a radioactive silvery grey actinide metal element
- Uranium discovered by Martin Heinrich Klaproth (1789)
- Uranium first isolated by Eugène-Melchior Péligot (1841)
- Uranium named after planet Uranus, itself named after Greek god of the sky Uranus
- Uranium occurs naturally in several minerals such as uranite (pitchblende), brannerite, carnotite, phosphate rock and monazite sands
- Naturally occurring uranium consists of 99% uranium-238 and 1% uranium-235
- Uranium is malleable, ductile, slightly paramagnetic, strongly electropositive and a poor electrical conductor
- Uranium has a very high density, much denser than lead but slightly less dense than tungsten and gold
- Uranium decays slowly by emitting an alpha particle. The half-life of uranium-238 is about 4.47 billion years
- Uranium-235 is the only naturally occurring fissionable fuel (a fuel that can sustain a chain reaction)
- Uranium fuel used in nuclear reactors is enriched with uranium-235
- Uranium is the major material from which other synthetic transuranium elements are made/li>
- Uranium-238 is fissionable by fast neutrons and transmuted to fissile plutonium-239 in a nuclear reactor
- Uranium is a very important element because it provides us with nuclear fuel used to generate electricity in nuclear power stations
- Uranium is used by the military to power nuclear submarines and in nuclear weapons
- Depleted uranium is uranium that has much less uranium-235 than natural uranium and is considerably less radioactive than natural uranium
- Depleted uranium (238U) is used in kinetic energy penetrators, ammunition, armor plating, ballast and counterweights
- Uranium is used as a colourant in uranium glass producing yellow to green colours and fluoresces green in ultraviolet light
- Uranium has no known biological role. It is a toxic metal
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