Chemical Elements.com - Terbium (Tb)

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Basic Information

Name: Terbium
Symbol: Tb
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)
Number of Protons/Electrons: 65
Number of Neutrons: 94
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 8.27 g/cm³
Color: silverish

Atomic Structure

Number of Energy Levels: 6

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

Fifth Energy Level:

Sixth Energy Level:

Isotopes

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

Facts

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

MLA Format for Citing This Page

Bentor, Yinon. Chemical Element.com - Terbium. <http://www.chemicalelements.com/elements/tb.html>.

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