keemiline element, kollaka läikega hõbejas pehme metall, sulamistemperatuur 1541 ºC, tihedus 2,985 Mg/m3, a rare soft silvery metallic element belonging to group 3 (formerly IIIA) of the periodic table; a.n. 21; r.a.m. 44.956; r.d. 2.989 (alpha form), 3.19 (beta form); m.p. 1541°C; b.p. 2831°C