Terbium element (Tb) is in period 6 of a periodic table. Terbium is in the f-block and it is classified as a lanthanide on the periodic table.
There is a lot more information related to terbium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Terbium element (Information Table)
- Terbium element in Periodic table
- Facts about Terbium
- Properties of Terbium
- Uses of Terbium
Terbium Element (Information Table)
The important data related to terbium element is given in the table below.
|Appearance of terbium||Silvery white appearance|
|Atomic number of terbium||65|
|Symbol of terbium||Tb|
|Atomic mass of terbium||158.93 u|
|Protons, Neutrons & Electrons in terbium||Protons: 65, Neutrons: 94, Electrons: 65|
|State of terbium (at STP)||Solid|
|Period number of terbium in periodic table||6|
|Block of terbium in periodic table||f-block|
|Category of terbium||Inner transition metals|
|Bohr model or Electrons per shell or Electrons arrangement in terbium||2, 8, 18, 27, 8, 2|
|Electron configuration of terbium||[Xe] 4f9 6s2|
|Orbital diagram of terbium|
|Atomic radius of terbium (van der Waals radius)||221 picometers|
|Density of terbium||8.22 g/cm3|
|1st ionization energy of terbium||5.864 eV|
|Main isotope of terbium||159Tb|
|Melting point of terbium||1629 K or 1356 °C or 2473 °F|
|Boiling point of terbium||3396 K or 3123 °C or 5653 °F|
|Crystal structure of terbium||Hexagonal Close Packing (HCP)|
|Discovery of terbium||By Carl Gustaf Mosander in 1843|
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Terbium element in Periodic table
The Terbium element (Tb) has the atomic number 65 and is located in period 6. Terbium is a metal and it is classified as a lanthanide group element.
Facts about terbium
Here are a few interesting facts about the terbium element.
- Carl Gustaf Mosander discovered terbium in 1843.
- Terbium was given its name from the name of a small village of Sweden “Ytterby”.
- The earth’s crust has a concentration of 0.9 ppm by weight.
- Terbium is not available from one place on the earth. But it is evenly spread on the earth.
- The most common mineral of terbium is “monazite”.
Properties of terbium
Here is a list of some physical properties and chemical properties of terbium.
Physical properties of terbium
- Terbium is a metal that has a silvery white appearance.
- Terbium is a soft metal and it can even be cut with a knife.
- The density of terbium is 8.22 g/cm3 and its atomic mass is 158.93 amu.
- Terbium has a HCP crystal structure.
- The melting point and boiling point of terbium is 1629 K and 3396 K respectively.
- There are many isotopes of terbium, but out of those isotopes, the most abundant isotope is 159Tb.
Chemical properties of terbium
- Terbium metal is reactive and it is always found as a compound with other elements in the earth’s crust.
- Terbium generally forms 3+ ions during a chemical reaction.
- When the 3+ ions are excited by the appropriate wavelength of light, they emit a green light.
Uses of terbium
Here are some uses of the terbium element.
- Terbium is used in euro notes as it glows green in color.
- Terbium chloride is used to detect microbes.
- Magnets are also prepared by alloying terbium with neodymium and dysprosium. These magnets can retain their magnetism even at higher temperatures.
- Terbium is also used as a phosphor in color TV tubes. This is because terbium ions can emit green light.