Fermium element (Fm) is in period 7 of a periodic table. Fermium is in the f-block and it is classified as an actinide on the periodic table.
There is a lot more information related to fermium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Fermium element (Information Table)
- Fermium element in Periodic table
- Facts about Fermium
- Properties of Fermium
- Uses of Fermium
Fermium Element (Information Table)
The important data related to fermium element is given in the table below.
|Atomic number of fermium||100|
|Symbol of fermium||Fm|
|Atomic mass of fermium (most stable isotope)||257 u|
|Protons, Neutrons & Electrons in fermium||Protons: 100, Neutrons: 157, Electrons: 100|
|State of fermium (at STP)||Solid (predicted)|
|Period number of fermium in periodic table||7|
|Block of fermium in periodic table||f-block|
|Category of fermium||Inner transition metals|
|Bohr model or Electrons per shell or Electrons arrangement in fermium||2, 8, 18, 32, 30, 8, 2|
|Electron configuration of fermium||[Rn] 5f12 7s2|
|Orbital diagram of fermium|
|Electronegativity of fermium (on pauling scale)||1.3|
|Density of fermium (predicted)||9.7 g/cm3|
|1st ionization energy of fermium||6.50 eV|
|Main isotope of fermium||257Fm|
|Melting point of fermium (predicted)||1800 K or 1527 °C or 2781 °F|
|Crystal structure of fermium||Face Centered Cubic (FCC)|
|Discovery of fermium||By Albert Ghiorso and his team (in 1952)|
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).
Fermium element in Periodic table
The Fermium element (Fm) has the atomic number 100 and is located in period 7. Fermium is a metal and it is classified as an actinide group element.
Click on above elements in the periodic table to see their information.
Facts about fermium
Here are a few interesting facts about fermium element.
- Fermium element was identified by Albert Ghiorso and his team (in 1952) at Lawrence Berkeley National Laboratory.
- Fermium was given its name to honor the physicist Enrico Fermi.
- Fermium is a radioactive element which is prepared in a nuclear reactor and it is not available naturally.
- There are around 20 isotopes of fermium and these are all radioactive in nature.
- 257Fm is the isotope of fermium which has a longest half-life (only 100 days).
Properties of fermium
Here is a list of some physical properties and chemical properties of fermium.
Physical properties of fermium
- Fermium has a FCC crystal structure (predicted).
- The predicted density of fermium is 9.7 g/cm3 and the most stable isotope of fermium has an atomic mass of 257 amu.
- It has been found through ca;culations that the melting point of fermium is 1800 K.
Chemical properties of fermium
- Fermium is a radioactive and toxic element.
- The most common oxidation state of fermium is +3.
- The electronic configuration of fermium ([Rn] 5f12 7s2) indicates that the last electron enters the f-orbital and hence it is f-block element on the periodic table.
Uses of fermium
Fermium has no commercial uses because of its radioactive nature, and it is generally used for research work.
- Fermium – Element information, properties and uses | Periodic Table. (n.d.). Fermium – Element Information, Properties and Uses | Periodic Table. https://www.rsc.org/periodic-table/element/100/fermium
- Fermium – Wikipedia. (2007, December 7). Fermium – Wikipedia. https://en.wikipedia.org/wiki/Fermium
- It’s Elemental – The Element Fermium. (n.d.). It’s Elemental – the Element Fermium. https://education.jlab.org/itselemental/ele100.html
- P. (n.d.). Fermium | Fm (Element) – PubChem. Fermium | Fm (Element) – PubChem. https://pubchem.ncbi.nlm.nih.gov/element/Fermium
- Periodic Table of Elements: Los Alamos National Laboratory. (n.d.). Periodic Table of Elements: Los Alamos National Laboratory. https://periodic.lanl.gov/100.shtml
- Periodic Table of Nottingham – University of Nottingham. (n.d.). Periodic Table of Nottingham – University of Nottingham. https://www.nottingham.ac.uk/periodicnottingham/fermium
- Thornton, B. F., & Burdette, S. C. (2017, June 23). Frantically forging fermium. Nature Chemistry, 9(7), 724–724. https://doi.org/10.1038/nchem.2806
- 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
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