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What is the most common isotope for selenium?
The most common isotope of selenium is selenium-80, which makes up about 50% of naturally occurring selenium.
What is the elemental selenium in selenium dioxide monohydrate?
The elemental selenium in selenium dioxide monohydrate exists as Se(IV) in the +4 oxidation state. It is bonded to two oxygen atoms in a linear configuration. The oxygen atoms are bound to the selenium atom in a double bond.
What are the names of common isotopes of selenium?
Selenium has six naturally occurring isotopes, five of which are stable: 74Se, 76Se, 77Se, 78Se, and 80Se. The last three also occur as fission products, along with 79Se, which has a half-life of 327,000 years. The final naturally occurring isotope, 82Se, has a very long half-life (~1020 yr, decaying via double beta decay to 82Kr), which, for practical purposes, can be considered to be stable. Twenty-three other unstable isotopes have been characterized
What is the chemical name for SeO?
Selenium http://www.chemicalelements.com/elements/se.html
Does selenium blow up with chlorine?
It doesn't seem likely. Selenium isn't terribly reactive, and selenium monochloride exists in equilibrium with a different kind of selenium chloride, chlorine gas, and elemental selenium; this indicates that there's not a huge energy difference between the uncombined elements and the compound, as you would expect there to be if they "blew up" when combined.
Is selenium synthetic?
Selenium is a naturally occurring element and nutrient that can be found in the soil and water. It is not a synthetic compound, but it can also be produced synthetically for various industrial and commercial applications.
What is the composition and structure of selenium?
Selenium is a nonmetal element that belongs to the oxygen group of the periodic table. Its atomic number is 34, and it has multiple allotropes with different physical and chemical properties. Selenium exists in various forms, including elemental selenium, selenide ions, selenite ions, and selenate ions.
What is selenium standard state?
In its standard state, selenium exists as a grey, metallically lustrous solid with a crystalline structure. It is a nonmetal with properties that are intermediate between sulfur and tellurium. Selenium is typically found in nature in its elemental form or in various minerals.
What type of element is selenium?
Selenium exists in several allotropic forms. The most stable, crystalline hexagonal selenium, is metallic gray. Crystalline mono clinic selenium is a deep red color. Amorphous selenium is red in powder form and is black in vitreous form. Gray crystalline 'metallic' selenium conducts electricity better in the light than in the dark (photoconductive) and it can convert light directly into electricity (photovoltaic).
Is selenium water soluble?
No, selenium is a solid metalloid at room temperature, and it is not water soluble. There are several naturally-occurring chlorides of selenium, but those are insoluble as well.
Is symmetry a man made creteria or it exists naturally?
Symmetry exists naturally. Look at an animal, a leaf, or a flower and you will see symmetry (one side looks like the mirror of the other).
Where does selenium occur in nature?
Selenium is found in the Earth's crust and can be found in soil, water, and certain types of rocks. It is also naturally present in some foods, particularly in seafood, brazil nuts, and organ meats.
