n. 1.a trivalent metallic element of the rare earth group 2.a room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment
Element
Element : manganese Symbol : mn Atomic no. : 25 Melting Point (deg c) : 1246 Boiling Point (deg c) : 2061 Discoverer : gahn, scheele, and (1774) .. More >>