Selenium is a chemical element with the symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. Key facts
CriticalityMost of the targeted by-products elements are Critical Raw Materials (CRMs). CRMs combine raw materials of high importance to the EU economy and of high risk associated with their supply. Selenium is not part of the EU 2020 Critical Raw Materials List. Its criticality is considered to be high. Main uses of SeleniumMetallurgy: Selenium is used in alloys to replace more toxic lead, to improve the machinability of steel and of copper alloys, and in the production of electrolytic manganese. Glass production: Selenium is used as to remove the green tint caused by iron impurities, to produce a red colour, and to reduce solar heat transmission through glass. And also… in electronics (in rectifiers, in voltage surge protection devices, and in photovoltaic solar cells), in agricultural& biological products, such as food additives and fertilisers, in pigments, in lithium–selenium batteries, etc. Map of kernel density of weighted Selenium scores in Europe by DBQ geostatistical methodThe map below indicates few areas of potential interest for Selenium prospection in Europe. It is part of the “Mapping of by-product potential evaluation” (Deliverable 2.1) led by consortium member BRGM. This map was made based on the current available data and the DBQ geostatistical method, performing a kernel density calculation. The kernel density calculation is a statistical tool which estimates the probability density function of a random variable.
Post navigation Home About This Site Window Version Show Table With: Element Groups: Basic InformationName: Selenium Symbol: Se Atomic Number: 34 Atomic Mass: 78.96 amu Melting Point: 217.0 °C (490.15 K, 422.6 °F) Boiling Point: 684.9 °C (958.05005 K, 1264.8201 °F) Number of Protons/Electrons: 34 Number of Neutrons: 45 Classification: Non-metal Crystal Structure: Hexagonal Density @ 293 K: 4.79 g/cm3 Color: gray Atomic Structure
IsotopesIsotope Half LifeWhat is the atomic number for selenium 96?Atomic Number of Selenium
Selenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure.
How many protons and electrons are in selenium?
What element has 34 protons and 34 neutrons?Selenium is a Group 5 non-metal element, on the Periodic Table, with 34 protons in the nucleus.
What period is selenium in atomic number 34 )?Fact box. |