The Element Uranium

What is Uranium? Element Properties & Periodic Table Info

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Definition of the Uranium Element
A heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons. The first atomic bomb used in warfare was a uranium bomb that contained enough of the uramium-235 isotope to start a runaway chain reaction which in a fraction of a second caused a large number of the uranium atoms to undergo fission, there by releasing a fireball of energy. The Atomic Number of this element is 92 and the Element Symbol is U.

What is Uranium? Origin / Meaning of the name Uranium
Named after the planet Uranus which in Roman mythology was "Father Heaven".

 

Periodic Table Group and Classification of the of the Uranium Element
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. Uranium is classified as an element in the Actinide series as one of the "Rare Earth Elements" which can located in Group 3 elements of the Periodic Table and in the 6th and 7th periods. The Rare Earth Elements are of the Lanthanide and Actinide series. Most of the elements in the Actinide series are synthetic or man-made. Nearly 75% of all the elements in the Periodic Table are classified as metals which are detailed in the List of Metals.

What is Uranium? Facts about the Discovery and History of the Uranium Element
Uranium was discovered by Martin Heinrich Klaproth in Germany in 1789. Uranium was the first element that was found to be fissile. Radioactivity was first discovered in 1896 when Antoine Henri Becquerel, a French physicist, detected it from a sample of uranium.

What is Uranium? Occurrence of the Uranium Element
Properties within each individual group are similar, but nevertheless vary within a group. Generally chemical activity decreases as the period increases a non-metal group and increases as the period increases within a metal group. The first element in a group is always an active metal, the last is always an inactive non-metal.

Abundances of the element in different environments
% in Universe 210-8%
% in Sun 110-7%
% in Meteorites 9.810-7%
% in Earth's Crust 0.00018%
% in Oceans 3.310-7%
% in Humans 110-7%

Associated Uses of Uranium
Nuclear fuels
Nuclear weapons
Gyroscopic compasses
Ceramic glazes
Colored glass
X-rays
Uranium-238, uranium's most common isotope, can be converted into plutonium-239, a fissionable material that can also be used as a fuel in nuclear reactors.

U

The Properties of the Uranium Element
Symbol: U
Atomic Number: 92
Atomic Mass: 238.0289 amu
Melting Point: 1132.0 C - 1405.15 K
Boiling Point: 3818.0 C - 4091.15 K
Number of Protons/Electrons: 92
Number of Neutrons: 146
Crystal Structure: Orthorhombic
Density @ 293 K: 18.95 g/cm3
Color: silverish

What is Uranium? The Properties of the Uranium Element
Name of Element : Uranium
Symbol: U
Atomic Number: 92
Atomic Mass: 238.0289 amu
Melting Point: 1132.0 C - 1405.15 K
Boiling Point: 3818.0 C - 4091.15 K
Number of Protons/Electrons: 92
Number of Neutrons: 146
Crystal Structure: Orthorhombic
Density @ 293 K: 18.95 g/cm3
Color: silverish

Uranium as on the Periodic Table
Check out Uranium on the Periodic Table which arranges each chemical element according to its atomic number, as based on the Periodic Law, so that chemical elements with similar properties are in the same column. Our Periodic Table is simple to use - just click on the symbol for Uranium as on the Periodic Table for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element. An invaluable source of facts and information as a Chemistry reference guide.

What is Uranium - IUPAC and the Modern Standardised Periodic Table
The Standardised Periodic Table in use today was agreed by the International Union of Pure Applied Chemistry, IUPAC, in 1985 and now recognises more periods and elements than Dimitri  Mendeleev knew in his day in his day but still all fitting into his concept of  the "Periodic Table" in which Uranium is just one element that can be found.

Learn about what is Uranium with these fast facts...
These articles contain facts and information relating to Uranium and each of the other elements including the Periodic Symbol,  group, classification, properties and atomic number which is often referred to as the Periodic Table Number. Test your knowledge of chemistry and the Periodic Table by completing the Element Symbols and Atomic Numbers on our Blank Periodic Table. Chemistry students will also find a helpful section on Chemical Formulas.

What is the Element Uranium

The Elements are the building blocks of Modern Science & Chemistry


 

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