What is the meaning of atomic number 81?

noun

  • 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.
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). atomic number 81. Retrieved September 21, 2026, from http://smartdefine.org/atomic_number_81/definitions/1258360
ChicagoWordNet. 2010. "atomic number 81" http://smartdefine.org/atomic_number_81/definitions/1258360 (accessed September 21, 2026).
HarvardWordNet 2010, atomic number 81, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/atomic_number_81/definitions/1258360>.
MLAWordNet. "atomic number 81" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/atomic_number_81/definitions/1258360>