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Thulium Symbol Tm Atomic Number 69 Atomic Mass 168.9342 Family Lanthanide (Rare Earth Metal) Pronunciation THU-lee-um Overview Thulium was given its name in honor of the earliest name for Scandanavia, Thule. The element was discovered and named by...

Thulium is a rare earth element denoted by the atomic symbol Tm. It's atomic number is 69, and its atomic weight is 168.9342. Its melting point is 2,813°F (1,545°C) and its boiling point, 3,537°F (1,947°C). It is the rarest of all the...

Thulium is a rare earth element, one of the elements found in row 6 of the periodic table. It has an atomic number of 69, an atomic mass of 168.9342, and a chemical symbol of Tm. Thulium is a silvery metal so soft it can be cut with a knife. It is...

Thulium (pronounced /ˈθjuːliəm/) is a chemical element that has the symbol Tm and atomic number 69. A lanthanide element, thulium is the least abundant of the rare earths. It is an easily workable metal with a bright silvery-gray luster and can be...