Selenium is an element. It is in the p block.
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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.
Selenium chloride (SeCl4) is the compound formed from selenium and chlorine. It is a yellowish-red liquid with a pungent odor.
No, selenium is a chemical element found on the periodic table with the atomic number 34 and symbol Se. It is a non-metal element that can exist in various forms, such as pure elemental selenium or in compounds with other elements.
The compound formed by barium and selenium is barium selenide (BaSe). It is an ionic compound with a 1:1 ratio of barium to selenium atoms.
Selenium is an element. Elements don't contain compounds.