I dont know if I would say poisonous. As far as I know there is only one oxide that is not radioactive. I ingested this for 30 days 10 yrs later i am still here, although I believe it has harmed me.
Thulium belongs to the Lanthanide family. Thulium is a silvery metal, so soft it can be cut with a knife. Thulium is stable in air, but reacts slowly with water, and rapidly with acids.
Thulium is an lanthanide element with atomic number 69.
The symbol for tantalum is Ta.
No.
Thulium, with the chemical symbol Tm, is the chemical element with the atomic number 69.
Thulium--Tm, atomic number 69--is a silvery-white metal.
syke
69 protons, 69 electrons Thulium-169 isotope has 100 neutrons
168.93
6
Valls
300 :)