Selenium chemical element with atomic number symbol and weight,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行
Element Data Atomic Symbol: Se Atomic Number: 34 Atomic Weight: 78.96 Isotopes and Abundances: 74 Se 0.9 %, 76 Se 9.2 %, 77 Se 7.6 %, 78 Se 23.7 %, 80 Se 49.8 %, 82 Se 8.8 % 1 Atm Melting Point: 490 K 1 Atm Boiling Point: 958.1 K Common Valences: +6,...
Selenium is a chemical element; it has symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.[7] It se...
Selenium Symbol: SeSelenium Atomic Number: 34Selenium Atomic Weight: 78.96What is Selenium?Selenium (atomic number 32, symbol Se) is a nonmetal and a chemical element that is added to dietary supplements and is an essential mineral. It was first observed by the Swedish scientist Jons Jacob ...
withAtomicNumberZ=34andMassNumberA=78.96isingroupVIAandperiod4oftheperiodictableoftheelements.#Ithassulfurontopandarsenicnexttoit.Bothsulfurandarsenichavesomehealingproperties,andsinceneighborsintheperiodictablehavesimilarproperties,itisnotsurprisingthatseleniumseemstoinfluencehumanhealth.ItschemicalsymbolisSe,andis...
Find information on Selenium including chemical element properties like atomic weight and a list of compounds that contain Selenium.
Selenium has atomic number 34, meaning each atom has 34protons. The element symbol of selenium is Se. Selenium was discovered jointly in 1817 by Swedish chemists Jöns Jakob Berzelius (1779–1848) and Johan Gottlieb Gahn (1745–1818). ...
Selenium is a chemical element that is placed in the 16thgroup and 4thperiod in the periodic table. The symbol of the selenium element is Se. It is a nonmetal element with the atomic number 34. It shows similar properties as sulphur, tellurium, and arsenic. Sulphur is placed above selenium...
It occurs free in volcanic areas and in sulphide ores, esp pyrite. The common form is a grey crystalline solid that is photoconductive, photovoltaic, and semiconducting: used in photocells, solar cells, and in xerography. Symbol: Se; atomic no: 34; atomic wt: 78.96; valency: –2, 4, ...
The Selenium , with the cas number 7782-49-2, a chemical element with the atomic number 34, and, also exists in many non-conductive forms: a black glass-like allotrope, as well as several red crystalline forms built of eight-membered ring molecules. It is found in economic quantities in...