Bismuth
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Bismuth is a chemical element; it has symbol Bi and atomic number 83. It is a post-transition metal and one of the pnictogens, with chemical properties resembling its lighter group 15 siblings arsenic
Bismuth crystals and 1cm 3 cube
Left: A bismuth hopper crystal is exhibiting the stairstep crystal structure and iridescent colors, which are produced by interference of light within the oxide film on its surface. Right: a 1 cm3 cube of unoxidised bismuth metal
Bismuth(III) oxide powder
Bismite mineral
Polonium
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Polonium is a chemical element; it has symbol Po and atomic number 84. A rare and highly radioactive metal with no stable isotopes, polonium is a chalcogen and chemically similar to selenium and tellu
Bismuth
…Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium…
Polonium on brass sheet
The alpha form of solid polonium