Science, Tech, Math › Science Bismuth Facts Chemical & Physical Properties of Bismuth Share Flipboard Email Print Wilfried Puhlmann / EyeEm/Getty Images Science Chemistry Periodic Table Basics Chemical Laws Molecules Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate by Anne Marie Helmenstine, Ph.D. Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. Updated March 09, 2017 Symbol Bi Atomic Number 83 Atomic Weight 208.98037 Electron Configuration [Xe] 4f14 5d10 6s2 6p3 Element Classification Metal Discovery Known to the ancients. Name Origin German: bisemutum, (white mass), presently spelled wismut. Density (g/cc) 9.747 Melting Point (K) 44.5 Boiling Point (K) 1883 Appearance hard, brittle, steel-gray metal with a pinkish tinge Atomic Radius (pm) 170 Atomic Volume (cc/mol) 21.3 Covalent Radius (pm) 146 Ionic Radius 74 (+5e) 96 (+3e) Specific Heat (@20°C J/g mol) 0.124 Fusion Heat (kJ/mol) 11.00 Evaporation Heat (kJ/mol) 172.0 Debye Temperature (K) 120.00 Pauling Negativity Number 2.02 First Ionizing Energy (kJ/mol) 702.9 Oxidation States 5, 3 Lattice Structure rhombohedral Lattice Constant (Å) 4.750 References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.) Return to the Periodic Table Continue Reading