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.
69 protons, 69 electrons Thulium-169 isotope has 100 neutrons
168.93
300 :)
6
Valls
Diamonds are formed from 100% carbon. The elements in Thulium are not conducive to forming diamonds. From the Jefferson Lab Web site: ". . . thulium is primarily obtained through an ion exchange process from monazite sand ((Ce, La, Th, Nd, Y)PO4), a material rich in rare earth elements that can contain as much as 0.007% thulium."