Bismuth is a chemical element wi seembol Bi an atomic nummer 83. Bismuth, a pentavalent puir metal, chemically resembles arsenic an antimony. Elemental bismuth mey occur naiturally, tho its sulfide an oxide furm important commercial ores. The free element is 86% sae dense as leid. It is a brickle metal wi a siller white colour whan freshly produced, but is aften seen in air wi a pink tinge awin tae surface oxidation. Bismuth is the maist naiturally diamagnetic element an haes ane o the lawest values o thermal conductivity oot o aw metals.
↑Cucka, P.; Barrett, C. S. (1962). "The crystal structure of Bi and of solid solutions of Pb, Sn, Sb and Te in Bi". Acta Crystallographica. 15 (9): 865. doi:10.1107/S0365110X62002297.
↑Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN0-8493-0464-4.