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atomic number 81 meaning and definition

Definition and meaning of atomic number 81 at MeaningMonkey.org. atomic number 81 meaning and definition in the English Dictionary.

ATOMIC NUMBER 81 noun

Definition of atomic number 81 (noun)

  1. 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
Source: Princeton University Wordnet
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