Samarium element (Sm) is in period 6 of a periodic table. Samarium is in the f-block and it is classified as a lanthanide on the periodic table.
There is a lot more information related to samarium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Samarium element (Information Table)
- Samarium element in Periodic table
- Facts about Samarium
- Properties of Samarium
- Uses of Samarium
Samarium Element (Information Table)
The important data related to samarium element is given in the table below.
|Appearance of samarium||Silvery white|
|Atomic number of samarium||62|
|Symbol of samarium||Sm|
|Atomic mass of samarium||150.36 u|
|Protons, Neutrons & Electrons in samarium||Protons: 62, Neutrons: 88, Electrons: 62|
|State of samarium (at STP)||Solid|
|Period number of samarium in periodic table||6|
|Block of samarium in periodic table||f-block|
|Category of samarium||Inner transition metals|
|Bohr model or Electrons per shell or Electrons arrangement in samarium||2, 8, 18, 24, 8, 2|
|Electron configuration of samarium||[Xe] 4f6 6s2|
|Orbital diagram of samarium|
|Electronegativity of samarium (on pauling scale)||1.17|
|Atomic radius of samarium (van der Waals radius)||229 picometers|
|Density of samarium||7.35 g/cm3|
|1st ionization energy of samarium||5.644 eV|
|Main isotope of samarium||152Sm|
|Melting point of samarium||1345 K or 1072 °C or 1962 °F|
|Boiling point of samarium||2173 K or 1900 °C or 3452 °F|
|Crystal structure of samarium||Rhombohedral|
|Discovery of samarium||By Lecoq de Boisbaudran in 1879|
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).
Samarium element in Periodic table
The Samarium element (Sm) has the atomic number 62 and is located in period 6. Samarium is a metal and it is classified as a lanthanide group element.
Click on above elements in the periodic table to see their information.
Facts about samarium
Here are a few interesting facts about the samarium element.
- Samarium was given its name from the name of its ore “samarskite”.
- Lecoq de Boisbaudran was the chemist who discovered samarium in 1879.
- The concentration of samarium in the earth’s crust is around 6 ppm by weight.
- Samarium is the 40th most abundant element present in the earth’s crust.
Properties of samarium
Here is a list of some physical properties and chemical properties of samarium.
Physical properties of samarium
- Samarium has a silvery-gray metallic appearance.
- Samarium has many isotopes and the most abundant isotope is 152Sm.
- The density of samarium is 7.35 g/cm3 and its atomic mass is 150.36 amu.
- The melting point and boiling point of samarium is 1345 K and 2173 K respectively.
- Samarium has a rhombohedral crystal structure.
Chemical properties of samarium
- Samarium is reactive and it tarnishes easily if kept open in the air.
- Samarium metal starts to ignite when it is heated in the air at the temperature of 150 °C.
- Samarium is a reactive metal and so it is found in a compound form with other elements.
- The most common oxidation state of samarium is +3.
- Samarium has an electron configuration of [Xe] 4f6 6s2 and it is classified as a f-block element on the periodic table because of the last electron entering in the f-orbitals.
Uses of samarium
Here are some uses of the samarium element.
- Samarium is used in carbon arc lighting which is used in studio lighting.
- Samarium is also used as a neutron absorber in nuclear power plants.
- Samarium is also used in manufacturing of optical lasers as well as glasses that can absorb infrared rays.
- Samarium and cobalt are alloyed with each other to make magnets.
- Samarium – Wikipedia. (2009, June 6). Samarium – Wikipedia. https://en.wikipedia.org/wiki/Samarium
- Samarium – Element information, properties and uses | Periodic Table. (n.d.). Samarium – Element Information, Properties and Uses | Periodic Table. https://www.rsc.org/periodic-table/element/62/samarium
- Possolo, et al. (2018, January 4). Interpreting and propagating the uncertainty of the standard atomic weights (IUPAC Technical Report). Pure and Applied Chemistry, 90(2), 395–424. https://doi.org/10.1515/pac-2016-0402
- Emsley, J. (2011). Nature’s Building Blocks: An A-Z Guide to the Elements. United Kingdom: OUP Oxford.
- Haynes, W. M. (Ed.). (2014, June 4). CRC Handbook of Chemistry and Physics. https://doi.org/10.1201/b17118
- Electronic structure of the elements. (2000, March). The European Physical Journal C, 15(1–4), 78–79. https://doi.org/10.1007/bf02683401
- James A. M. & Lord M. P. (1992). Macmillan’s chemical and physical data. Macmillan.
- Bedford, et al. (1996, April 1). Recommended values of temperature on the International Temperature Scale of 1990 for a selected set of secondary reference points. Metrologia, 33(2), 133–154. https://doi.org/10.1088/0026-1394/33/2/3
- Allred, A. (1961, June). Electronegativity values from thermochemical data. Journal of Inorganic and Nuclear Chemistry, 17(3–4), 215–221. https://doi.org/10.1016/0022-1902(61)80142-5
- P. (n.d.). Samarium | Sm (Element) – PubChem. Samarium | Sm (Element) – PubChem. https://pubchem.ncbi.nlm.nih.gov/element/Samarium
- It’s Elemental – The Element Samarium. (n.d.). It’s Elemental – the Element Samarium. https://education.jlab.org/itselemental/ele062.html
- Periodic Table of Elements: Los Alamos National Laboratory. (n.d.). Periodic Table of Elements: Los Alamos National Laboratory. https://periodic.lanl.gov/62.shtml
- Atomic Weight of Samarium | Commission on Isotopic Abundances and Atomic Weights. (n.d.). Atomic Weight of Samarium | Commission on Isotopic Abundances and Atomic Weights. https://ciaaw.org/samarium.htm
- Atomic Data for Samarium (Sm). (n.d.). Atomic Data for Samarium (Sm). https://physics.nist.gov/PhysRefData/Handbook/Tables/samariumtable1.htm
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