Periodic table of the elements
GadoliniumTerbiumDysprosium
65
Tb
Terbium
158.92535
2
8
18
27
8
2
65
Tb
Terbium
158.92535
2
8
18
27
8
2
General
NameTerbium
SymbolTb
Number65
Chemical seriesLanthanides
Group / Period0 / 6
Blockf-block
CAS registry number7440-27-9

Physical properties
Statesolid
Density8.23 g/cm3
Melting point1629 K (1356 °C, 2473 °F)
Boiling point3503 K (3230 °C, 5846 °F)
Critical point

Atomic properties
Atomic Weight158.92535 g/mol
Crystal structurehexagonal
Electronegativity1.10
Atomic radius175 pm
Atomic radius (calculated)225 pm
Electron configuration[Xe] 4f9 6s2
Electrons per shell2, 8, 18, 27, 8, 2
Number of protons65
Number of neutrons94

Other languages
SpanishTerbio
PortugueseTérbio
FrenchTerbium
GermanTerbium
ItalianTerbio
RussianТербий
PolishTerb
Chinese
Arabicتيربيوم
TurkishTerbiyum
DutchTerbium


Periodic table of the elements
GadoliniumTerbiumDysprosium