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Understanding the element
Terbium (Tb) is chemical element 65. It belongs to the lanthanoids, and its reference state at room temperature is a solid. Those basic facts are a useful starting point for its chemistry and applications.
Where do we encounter it?
In practice, it turns up most often in phosphors, magnets and fuel-cell materials.
phosphorsmagnetsfuel-cell materials
Standard atomic weight158.925354(7)
What its position in the table tells us
Terbium sits in period 6 and the F block. That location is useful because neighbouring elements often share trends in valence electrons, oxidation states and bonding behaviour.
Worth remembering
Terbium has a characteristic place in the periodic table that helps explain both its chemistry and its practical uses
Terbium has a characteristic place in the periodic table that helps explain both its chemistry and its practical uses