Terbium

Statistics:

• Name: Terbium
• Symbol: Tb
• Classification: Lanthanide
• Atomic Number: 65
• Atomic Mass: 158.92535 g/mol
• Density: 8.25 g/cm³
• Melting: 1360°C
• Boiling: 3041°C
• Protons & Electrons:65
• Neutrons:94
• Discovered: 1843
• Discovered By: Mosander
• Sponsored By: Your Ad Here

Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 27
• Level 5: 8
• Level 6: 2

Isotopes:

Isotope: Half-life

• ¹⁵¹Tb: 17.609 hours
• ¹⁵⁵Tb: 5.32 days
• ¹⁵⁶Tb: 5.35 days
• ¹⁵⁷Tb: 71 years
• ¹⁵⁸Tb: 180 years
• ¹⁵⁹Tb: stable
• ¹⁶⁰Tb: 72.3 days
• ¹⁶¹Tb: 6.88 days

Brief Summary

Terbium is a Lanthanide with the symbol 'Tb' and contains 65 Protons & Electrons with 94 neutrons in the nucleus of the atom. Terbium has an atomic mass of 158.92535 g/mol and, at a temperature of 20°C, has a density of 8.25 g/cm³. It will melt at a temperature of 1360°C and boil at 3041°C.

Terbium was discovered by Mosander in 1843 and is named 'Terbium' Ytterby, a town in Sweden.

Some common usages for Terbium: in color TV"s.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Terbium :: Tb :: 65 - Chemical Element. 29 Jul. 2010 <http://www.chemicalelement.com/element/terbium.html>.