# atomic number 81
## Noun (N)
### Sense: 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
- ธาตุแทลเลียม
- เลขอะตอม 81
- แทลเลียม