Einsteinium – Periodic Table [Element Information & More]

einsteinium element periodic table

Einsteinium element (Es) is in period 7 of a periodic table. Einsteinium is in the f-block and it is classified as an actinide on the periodic table.

There is a lot more information related to einsteinium which is mentioned in the Information Table given below.

So let’s dive right into it!

Table of contents

Einsteinium Element (Information Table)

The important data related to einsteinium element is given in the table below.

Appearance of einsteiniumSilvery white appearance
Atomic number of einsteinium99
Symbol of einsteiniumEs
Atomic mass of einsteinium (most stable isotope)252 u
Protons, Neutrons & Electrons in einsteiniumProtons: 99, Neutrons: 153, Electrons: 99
State of einsteinium (at STP)Solid
Period number of einsteinium in periodic table7
Block of einsteinium in periodic tablef-block
Category of einsteiniumInner transition metals
Bohr model or Electrons per shell or Electrons arrangement in einsteinium2, 8, 18, 32, 29, 8, 2
Electron configuration of einsteinium[Rn] 5f11 7s2
Orbital diagram of einsteiniumorbital diagram of einsteinium
Electronegativity of einsteinium (on pauling scale)1.3
Atomic radius of einsteinium (van der Waals radius)245 picometers
Density of einsteinium8.84 g/cm3
1st ionization energy of einsteinium6.42 eV
Melting point of einsteinium (calculated)1133 K or 860 °C or 1580 °F
Crystal structure of einsteiniumFace Centered Cubic (FCC)
Discovery of einsteiniumBy 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).

Einsteinium element in Periodic table

The Einsteinium element (Es) has the atomic number 99 and is located in period 7. Einsteinium 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 einsteinium

Here are a few interesting facts about the einsteinium element.

  1. The name einsteinium was given to this element to honor the physicist Albert Einstein.
  2. Albert Ghiorso and his team discovered einsteinium in 1952 at Lawrence Berkeley National Laboratory.
  3. Einsteinium is artificially made in nuclear reactors, and it is a radioactive element.
  4. There are 19 isotopes of einsteinium and all these isotopes are radioactive in nature.
  5. 252Es is the isotope of einsteinium that has a half life of 471 days only.

Properties of einsteinium

Here is a list of some physical properties and chemical properties of einsteinium.

Physical properties of einsteinium

  • Einsteinium has a silvery white appearance.
  • If einsteinium is placed in a dark room, then it will glow blue in color.
  • Einsteinium has FCC crystal structure (predicted).
  • The predicted density of einsteinium is 8.84 g/cm3 and the most stable isotope of einsteinium has an atomic mass of 252 amu.

Chemical properties of einsteinium

  • The most common oxidation states of einsteinium are +3 and +2. Apart from this, it also shows other oxidation states.
  • Einsteinium is a radioactive element and it has similar properties like that of actinides.

Uses of einsteinium

Einsteinium has no commercial uses due to its radioactive nature and it is generally used for research work.

External resources:

  1. Einsteinium – Element information, properties and uses | Periodic Table. (n.d.). Einsteinium – Element Information, Properties and Uses | Periodic Table. https://www.rsc.org/periodic-table/element/99/einsteinium
  2. Einsteinium – Wikipedia. (2007, April 15). Einsteinium – Wikipedia. https://en.wikipedia.org/wiki/Einsteinium
  3. P. (n.d.). Einsteinium | Es (Element) – PubChem. Einsteinium | Es (Element) – PubChem. https://pubchem.ncbi.nlm.nih.gov/element/Einsteinium
  4. It’s Elemental – The Element Einsteinium. (n.d.). It’s Elemental – the Element Einsteinium. https://education.jlab.org/itselemental/ele099.html
  5. Periodic Table of Elements: Los Alamos National Laboratory. (n.d.). Periodic Table of Elements: Los Alamos National Laboratory. https://periodic.lanl.gov/99.shtml
  6. Redfern, J. (2016, November 22). Einsteinium declassified. Nature Chemistry, 8(12), 1168–1168. https://doi.org/10.1038/nchem.2676
  7. Discoveries at the Edge of the Periodic Table: First Ever Measurements of Einsteinium. (2021, February 3). Discoveries at the Edge of the Periodic Table: First Ever Measurements of Einsteinium. https://foundry.lbl.gov/2021/02/03/discoveries-at-the-edge-of-the-periodic-table-first-ever-measurements-of-einsteinium/
  8. Haire, R. G. (n.d.). Einsteinium. The Chemistry of the Actinide and Transactinide Elements, 1577–1620. https://doi.org/10.1007/1-4020-3598-5_12
  9. Prohaska, T., et al. (2022, May 1). Standard atomic weights of the elements 2021 (IUPAC Technical Report). Pure and Applied Chemistry, 94(5), 573–600. https://doi.org/10.1515/pac-2019-0603
  10. Haynes, W. M. (Ed.). (2014, June 4). CRC Handbook of Chemistry and Physics. https://doi.org/10.1201/b17118
  11. Kaye, G W.C., & Laby, T H. Tables of physical and chemical constants. 15th Edition. United States.
  12. Sansonetti, J. E., & Martin, W. C. (2005, December). Handbook of Basic Atomic Spectroscopic Data. Journal of Physical and Chemical Reference Data, 34(4), 1559–2259. https://doi.org/10.1063/1.1800011

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