This periodic table of elements provides comprehensive data on the chemical elements including scores of properties, element names in many languages and most known nuclides (Isotopes). Below the table there is a "Periodic Table Sorted By" section with links that will sort chemical elements by vario...
, silver, gold, mercury, tin, lead, and other elements have been known since ancient times and were used to make jewelry, coins, and tools. Phosphorus became the first element to be discovered by Hennig Brand in 1649. It is known as the first scientific discovery of a chemical element....
In fact aluminum is famous for not occurring natively: Despite being the third most abundant element in the earth's crust, accounting for over 8% of the total weight of the crust, it was completely unknown as a metal until 1825 when small, precious samples were first isolated from ore. Bu...
What are the 118 elements? An element, simply put, is afundamental unit of matter that cannot be easily broken down. It consists of a specific number of protons and variable neutrons and electrons. All of matter is made of these 118 elements, combined in various ratios and kept in differen...
T. et al. Synthesis of a new element with atomic number Z = 117. Phys. Rev. Lett. 104, 142502 (2010). Article ADS PubMed Google Scholar Khuyagbaatar, J. et al. 48Ca + 249Bk fusion reaction leading to element Z = 117: long-lived α-decaying 270Db and discovery ...
infinite strips onparallel to some directionwhich do not intersect any of the scatterers of the infinite billiard table. Both the number and the geometry of these corridors depend on. Hence, the value of the parameterstrongly affects the asymptotic properties of the dynamics, and in particular, ...
The first to recognize these regularities was the German chemist Johann Wolfgang Döbereiner who, in 1829, noticed a number of triads of similar elements:Some triads Element Atomic massDensity chlorine 35.5 0.00156 g/cm3 bromine 79.9 0.00312 g/cm3 iodine 126.9 0.00495 g/cm3 calcium 40.1 1.55 g...
On 1 May 2014 a paper published inPhys. Rev. Lettby J. Khuyagbaatar and others states the superheavy element with atomic number Z = 117 (ununseptium) was produced as an evaporation residue in the48Ca and249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, ...
The resultingPeriodic Table of the Elementsbelow includes the Atomic Number, Atomic mass, Symbol, Name, Electronegativity, Density, Ionization energy, Boiling point, Melting point, Electron Configuration, Oxidation States, Ground State Level, and Atomic Radius. If you typically work with a different ...
The atomic number of an element is equal to the total number of protons in the nucleus of the atoms of that element. The atomic number can provide insight into the electronic configuration of the element. For example, carbon has an electron configuration of [He] 2s22p2, since its atomic ...