Search results
Results from the WOW.Com Content Network
Strontium is a chemical element; it has symbol Sr and atomic number 38. An alkaline earth metal , it is a soft silver-white yellowish metallic element that is highly chemically reactive . The metal forms a dark oxide layer when it is exposed to air.
Distrontium ruthenate, also known as strontium ruthenate, is an oxide of strontium and ruthenium with the chemical formula Sr 2 RuO 4. It was the first reported perovskite superconductor that did not contain copper .
The list given in ISO 31-8:1992 was quoted from the 1998 IUPAC "Green Book" Quantities, Units and Symbols in Physical Chemistry and adds in some cases in parentheses the Latin name for information, where the standard symbol has no relation to the English name of the element. Since the 1992 edition of the standard was published, some elements ...
Strontium and barium have fewer applications than the lighter alkaline earth metals. Strontium carbonate is used in the manufacturing of red fireworks. [76] Pure strontium is used in the study of neurotransmitter release in neurons. [77] [78] Radioactive strontium-90 finds some use in RTGs, [79] [80] which utilize its decay heat.
It is one of two main strontium ruthenates, the other having the formula Sr 2 RuO 4. SrRuO 3 is a ferromagnetic. [1] It has a perovskite structure as do many complex metal oxides with the ABO 3 formula. The Ru 4+ ions occupy the octahedral sites and the larger Sr 2+ ions are distorted 12-coordinate. [2]
The first of these quantities is used in atomic physics, the second in chemistry, but both refer to the same basic property of the element. To convert from "value of ionization energy" to the corresponding "value of molar ionization energy", the conversion is: 1 eV = 96.48534 kJ/mol 1 kJ/mol = 0.0103642688 eV [12]
See {{Element-symbol-to-oxidation-state-data/doc}} for an overview. This list pulls data from {{Element-symbol-to-oxidation-state-data}} for each element then formats the result with {{Element-symbol-to-oxidation-state-row}}
This notation is used to specify electron configurations and to create the term symbol for the electron states in a multi-electron atom. When writing a term symbol, the above scheme for a single electron's orbital quantum number is applied to the total orbital angular momentum associated to an electron state. [4]