Tb
Z =
65
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Terbium
From the Swedish "
Ytterby
", meaning "
outer village
"
(AM) Atomic Mass
158.9254 amu
♦
Oxidation States
+3
(BP) Boiling Point
3041  °C
♦
(MP) Melting Point
1360 °C
(ρ) Density
8.25 g/cm
3
♦
Crystal Structure
Hexagonal
( χ ) Electronegativity
1.2
♦
(AR) Atomic Radius
1.59  Å
Physical State
Solid
♦
(C) Heat Capacity
0.182 J/g °C
Electronic-Config
[Xe]  4f
9
  6s
2
 
♦
(
I
1
) First Ionization E
565.4 kJ/mol
(ΔH
vap
) Heat of Vaporization
293 kJ/mol
♦
(ΔH
fus
) Heat of Fusion
10.15 kJ/mol
Year of Discovery
1843
♦
Location of Discovery
Sweden
(E°) Standard Potential
Tb
3+
⇔ Tb (-2.280 V)
Stable isotopes
 
159
Tb
Discovered/Synthesized by
Carl Gustaf Mosander
Natural Source
The mineral/ore bastnasite, monazite, loparite
Common Uses
Phosphors in tvs & trichromatic fluorescent lamps, computer disks, magnetostrictive materials
Other Info
Does not tarnish rapidly in air
Soft enough to be cut with a knife.
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