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14 hours ago · Manganese is a chemical element; it has symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese was first isolated in the 1770s. Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels.
14 hours ago · Zinc is an essential trace element for humans, [6] [7] [8] animals, [9] plants [10] and for microorganisms [11] and is necessary for prenatal and postnatal development. [12] It is the second most abundant trace metal in humans after iron, and the only metal which appears in all enzyme classes.
14 hours ago · Led Zeppelin were an English rock band formed in London in 1968. The group comprised vocalist Robert Plant, guitarist Jimmy Page, bassist and keyboardist John Paul Jones, and drummer John Bonham. With a heavy, guitar-driven sound, they are cited as one of the progenitors of hard rock and heavy metal, although their style drew from a variety of ...
- London, England
- 1968–1980
14 hours ago · v. t. e. Nonmetals are chemical elements that mostly lack distinctive metallic properties. They range from colorless gases like hydrogen to shiny crystals like iodine. Physically, they are usually lighter (less dense) than metals; brittle or crumbly if solid; and often poor conductors of heat and electricity.
14 hours ago · The alpha form of solid polonium. Polonium is a radioactive element that exists in two metallic allotropes. The alpha form is the only known example of a simple cubic crystal structure in a single atom basis at STP ( space group Pm 3 m, no. 221). The unit cell has an edge length of 335.2 picometers; the beta form is rhombohedral.
- α, β
- [209]
- silvery
14 hours ago · Poppy (singer) Moriah Rose Pereira (born January 1, 1995), known professionally as Poppy and formerly as That Poppy, is an American singer, songwriter, and YouTuber. She first earned recognition for starring in surreal performance art videos on YouTube as an uncanny valley -like android who commented on and satirized internet culture and modern ...
