Date of Discovery: 1843
Discoverer: Carl Mosander
Name Origin: Ytterby (a town in Sweden)
Uses: In color TV's
Obtained From: With other rare earths

 
Atomic Number: 65
Atomic Mass: 158.92534 amu
Melting Point: 1360.0 °C (1633.15 °K, 2480.0 °F)
Boiling Point: 3041.0 °C (3314.15 °K, 5505.8 °F)
Crystal Structure: Hexagonal
Density @ 293 K: 8.27 g/cm3
Color: Silverish

 
Isotope
Tb-151
Tb-155
Tb-156
Tb-157
Tb-158
Tb-159
Tb-160
Tb-161
Tb-162
Half Life
17.61 hours
5.3 days
5.3 days
110.0 years
180.0 years
Stable
72.3 days
6.91 days
7.6 min