atomic number 81

1. 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

   SynonymsthalliumTl

   Broadermetallic element

Questions about atomic number 81

What does atomic number 81 mean?

atomic number 81 means "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".

What is another word for atomic number 81?

Close synonyms include thallium, Tl. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.