atomic number 81


  • WordNet 3.6
    • n atomic number 81 a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores
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In science:

For non lone pair candidates, we chose Tl which has an atomic number (81) close to that of Bi and a small radius (89 pm), and Y which has a much smaller atomic number (39) but an intermediate radius (104 pm).
Non collinear magnetism and single ion anisotropy in multiferroic perovskites