Selenium is a chemical element. Its chemical symbol is Se and its atomic number is 34. It has 34 protons and 34 electrons and a mass number of 78.96. Selenium...

Selenium disulfide, also known as selenious disulfide, selenous disulfide, or selenium(IV) disulfide is a chemical compound. Its formula should be SeS2...

Selenium dioxide, also known as selenious oxide, selenous oxide, or selenium(IV) oxide, is a chemical compound. Its chemical formula is SeO2. It contains...

Selenium tetrachloride, also selenious chloride, selenous chloride, or selenium(IV) chloride, is a chemical compound made of selenium and chlorine. Its...

Selenium monochloride, also known as selenium(I) chloride or diselenium dichloride, is a chemical compound made of selenium and chlorine. Its chemical...

Selenium trioxide, also known as selenium(VI) oxide and selenic oxide, is a chemical compound. Its chemical formula is SeO3. It contains selenium in its...

Selenium hexafluoride, also known as selenium(VI) fluoride, is a chemical compound. Its chemical formula is SeF6. It contains selenium in its +6 oxidation...

Selenium tetrafluoride, also known as selenous fluoride and selenium(IV) fluoride, is a chemical compound. Its chemical formula is SeF4. It contains selenium...

Selenium fluoride can refer to either of these chemical compounds: Selenium tetrafluoride Selenium hexafluoride...

Selenium chloride can refer to either of these chemical compounds: Selenium monochloride Selenium tetrachloride...

Selenium oxide may refer to either of these chemical compounds: Selenium dioxide, weak oxidizing agent, stable, +4 oxidation state Selenium trioxide,...

Hydrogen selenide, also known as hydroselenic acid, selenium hydride, or selane, is a chemical compound. Its chemical formula is H2Se. It is an acid. It...

Selenium acid can refer to three selenium acids: Hydroselenic acid, H2Se Selenous acid, H2SeO3 Selenic acid, H2SeO4...

family or the chalcogens. The elements in this group are oxygen, sulfur, selenium, tellurium, polonium and livermorium. Oxygen is an odorless gas that can...

oxidized to a mixture of selenide and selenium, making an offwhite color. It is eventually oxidized to selenium dioxide. it reacts with acids to make...

colorless solution in water. It is a strong oxidizing agent. It can turn into selenium trioxide when dehydrated carefully. It is a very strong acid. It reacts...

Selenite is an ion. Its chemical formula is SeO2−3. It is the selenium structural analog of sulfite, SO2−3. It makes the hydrogen selenite ion, HSeO−3...

semiconductor rectifier in which the semiconductor is copper oxide or selenium. They were used to convert alternating current to direct current. They...

to make sodium selenate. It is made by reacting sodium hydroxide with selenium dioxide 2 NaOH + SeO2 → Na2SeO3 + H2O Sodium selenite is used to add a...

selenite ions. Selenous acid is a weak acid. It can be heated to make selenium dioxide. It is more stable than sulfurous acid. It can be crystallized...

reducing agent and can burn to make aluminium oxide and selenium dioxide. It is made by reacting selenium with aluminium powder at a high temperature. It is...

but a selenium atom replaces the sulfur atom. abbreviated as Sec or U; and in older publications as Se-Cys Stadtman, Therese 1974. Selenium biochemistry...

It reacts with tungsten to make tungsten hexafluoride and with selenium to make selenium tetrafluoride. It reacts with carbon monoxide to add chloride...

stronger reducing agents than sulfides. Selenide ores are the source of selenium. Selenides are normally mixed with sulfides. The selenide ion is unstable...

made cold. It has a very bad smell. It is very toxic. It is similar to selenium hexafluoride, even though it is less volatile (not as easily evaporated)...

can have a second heteroatom, which can be chalcogen (oxygen, sulfur, selenium, or tellurium) or more nitrogen. Azoles are grouped by the type of heteroatom...

It changes conductivity a little when light shines on it, similar to selenium. It is corrosive to many metals when molten. It can react with reactive...

Tellurium(IV) chloride is made by reacting tellurium powder and chlorine. It is used in making organic compounds. Selenium(IV) chloride Tellurium(II) chloride...

electricity flows through. When it is dark, almost no electricity flows through. Selenium can be used to make photocells, although some other chemicals can be used...

elements, so it is hard to study their chemistry or physical properties. Selenium has a mixture of properties of metals and nonmetals, and is sometimes counted...

Manganese(III) fluoride Manganese(IV) fluoride Potassium fluoride Selenium tetrafluoride Selenium hexafluoride Silver(I) fluoride, brown-yellow Silver(II) fluoride...

made by reacting cold fluorine with tellurium. Another way is reacting selenium tetrafluoride with warm tellurium dioxide. Fluorine can also react with...

selenite and selenate ions in them. Iron(II) hydroxide reduces them to selenium, which is much less toxic. It is also used in the nickel-iron battery....

cobalt, indium, iron, manganese, molybdenum, nickel, niobium, rhenium, selenium, tantalum, tellurium, tin, titanium, tungsten, vanadium, zinc, gold, copper...

is partially a metal and a nonmetal, such as black phosphorus and grey selenium). It can be used, for instance, as the material in the electrodes of an...

Boron, nitrogen and phosphorus each count as a "half a carbon" Halogens (Group 7) count as a hydrogen Oxygen, sulfur and selenium (Group 6) can be ignored...

oxide, absorbs water readily, white, irritating Selenium dioxide, white solid, has horseradish odor Selenium trioxide, very reactive solid Tellurium dioxide...

found as pyrite naturally Lead(II) sulfide, found as galena naturally Selenium disulfide, used in hair treatment creams Potassium sulfide, reacts with...

toxic, reducing agent Sodium selenate, strong oxidizing agent, other selenium compounds Sodium selenide, strong reducing agent, reactive Sodium selenite...

Berzelius used a superscript. Berzelius found the chemical elements silicon, selenium, thorium, and cerium. Students working in Berzelius laboratory also found...

same group as oxygen, selenium, and tellurium, so organosulfur compounds are similar to those that have carbon with oxygen, selenium, or tellurium. Sulfides...

contains ascorbic acid, and different minerals, such as chromium, manganese, selenium or zinc. It is a better antioxidant than black tea. Black tea contains...

of the geology of the Moon, comes from her name. The chemical element Selenium was also named after Selene. In post-Renaissance art, Selene is shown as...

the traditional metals, elements such as boron, silicon, arsenic, and selenium form organometallic compounds. Many complexes have coordination bonds between...

This has led to serious environmental damages, such as pesticides and selenium and other bad materials being washed into the rivers and polluting the...

the phonograph, five for aeronautics, four for hydrofoils, and two for a selenium cell. In 1888, he was one of the original members of the National Geographic...

chinook salmon, once the southernmost in the United States. Pesticides, selenium, and many more toxic materials are carried by the San Joaquin into San...

Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum...

Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum...

Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum...