It is an element - a lanthanide metal - with atomic number 69.
Thulium has 79 shells.
The symbol for tantalum is Ta.
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, with the chemical symbol Tm, is the chemical element with the atomic number 69.
Thulium is an lanthanide element with atomic number 69.
Thulium--Tm, atomic number 69--is a silvery-white metal.
69 protons, 69 electrons Thulium-169 isotope has 100 neutrons
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168.93
Thulium is a rare earth metal and does not have a discernible odor in its pure form. It is not known to produce any strong or distinctive smells.
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168.93