Selenium discovery and properties

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Metabolism Fennel is a source of vitamin B-6, which plays a vital role in energy metabolism by breaking down carbohydrates and proteins into glucose and amino acids.

Vitamin C is essential to collagen, the support system of the skin, and also works as an antioxidant to help prevent damage caused by the sun, pollution, and smoke. Chemistry in its element: This substance will be converted into selenium acid in water or sweat. What are the Toxic Effects of Selenium Exposure to higher levels of Se has been linked to neurological defects, carcinogenic effects, and brittle hair and nails [11].

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Despite billions of years of countless stars fusing hydrogen into helium it still makes up 75 per cent of the detectable content of the universe. Tellurium and selenium, J. Selenium is an important component of pigments used to make paints, ceramics, and plastics [1].

The hydrogen airship was doomed. The most stable form, crystalline hexagonal selenium, is metallic gray. For other applications, a red color may be desired, produced by mixtures of CdSe and CdS.

Gallium Element Facts

The solid metal fractures conchoidally. Selenium Pictures An average human body contains about 14 mg of Se [1].


No greenhouse gasses are emitted. He isolated gallium by electrolysis of its hydroxide in potassium hydroxide solution. Copyright for that class remains with the original authors.

Say oxygen or iodine and there is no clue in the sound of the word to the nature of the element, but zinc is different - zinc, zinc, zinc, you can almost hear a set of coins falling into an old fashioned bath.

Common applications[ edit ] The focus of this section is on the recognised metalloids. Commercially, most gallium is extracted as a byproduct of aluminum and zinc production. Here it has the big advantage over petrol of burning to provide only water. Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!

Selenium is a chemical element with symbol Se and atomic number 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 rarely occurs in its elemental state or as pure ore compounds.

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What's New and Beneficial about Tuna. Researchers have recently discovered that tuna contains the mineral selenium in an unusual form called selenoneine. Origins of the Periodic Table of Elements. The Periodic Table displays all known chemical elements which are grouped by chemical properties and atomic structure.

Our selenium page has over facts that span different quantities. Each entry has a full citation identifying its source. Areas covered include atomic structure, physical properties, atomic interaction, thermodynamics, identification, atomic size, crystal structure, history, abundances, and nomenclature.

What is Selenium. Selenium (pronounced as si-LEE-nee-em) is a metalloid, existing in both amorphous and crystalline forms, where the former appears as red/black powder and the latter as a silver-gray rock [1].Denoted by the chemical symbol Se, it has 24 isotopes of which only six exist naturally in different concentrations in the earth’s crust [4].

Selenium discovery and properties
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