Dubnium (Db) – Periodic Table [Element Information & More]

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dubnium element periodic table

Dubnium element (Db) is in group 5 and period 7 of a periodic table. Dubnium is in the d-block and it is classified as a transition element on the periodic table.

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

So let’s dive right into it!

Table of contents

Dubnium Element (Information Table)

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

Atomic number of dubnium105
Symbol of dubniumDb
Atomic mass of dubnium (most stable isotope)268 u
Protons, Neutrons & Electrons in dubniumProtons: 105, Neutrons: 157, Electrons: 105
State of dubnium (at STP)Solid (predicted)
Group number of dubnium in periodic table5
Period number of dubnium in periodic table7
Block of dubnium in periodic tabled-block
Category of dubniumTransition metal
Bohr model or Electrons per shell or Electrons arrangement in dubnium2, 8, 18, 32, 32, 11, 2
Electron configuration of dubnium[Rn] 5f14 6d3 7s2
Orbital diagram of dubniumorbital diagram of dubnium
Density of dubnium (predicted)21.6 g/cm3
Main isotope of dubnium268Db
Crystal structure of dubniumBody Centered Cubic  (BCC)

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).

Dubnium element in Periodic table

The Dubnium element (Db) has the atomic number 105 and is located in group 5 and period 7. Dubnium is a metal and it is classified as a transition element.

Click on above elements in the periodic table to see their information.

Facts about dubnium

Here are a few interesting facts about the dubnium element.

  1. Dubnium was given its name from the name of the town “Dubna”, which is in Moscow, Russia.
  2. Dubnium does not occur naturally but it is prepared artificially in the lab.
  3. There are 7 isotopes of dubnium and all these isotopes are radioactive.
  4. 268Db is a longest lived isotope of dubnium which has a half life of only 28 hours.

Properties of dubnium

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

  • Dubnium is unstable and a radioactive element.
  • Dubnium has BCC crystal structure (predicted).
  • The predicted density of dubnium is 21.6 g/cm3 and its most stable isotope has an atomic mass 268 amu.
  • It has been found through research that the +5 oxidation state of dubnium is more stable.

Uses of dubnium

Dubnium is a radioactive element and it is available in very less quantity. Because of this, it is used for research work only.

External resources:

  1. Dubnium – Element information, properties and uses | Periodic Table. (n.d.). Dubnium – Element Information, Properties and Uses | Periodic Table. https://www.rsc.org/periodic-table/element/105/dubnium
  2. Dubnium – Wikipedia. (2018, March 24). Dubnium – Wikipedia. https://en.wikipedia.org/wiki/Dubnium
  3. It’s Elemental – The Element Dubnium. (n.d.). It’s Elemental – the Element Dubnium. https://education.jlab.org/itselemental/ele105.html
  4. P. (n.d.). Dubnium | Db (Element) – PubChem. Dubnium | Db (Element) – PubChem. https://pubchem.ncbi.nlm.nih.gov/element/Dubnium
  5. Periodic Table of Elements: Los Alamos National Laboratory. (n.d.). Periodic Table of Elements: Los Alamos National Laboratory. https://periodic.lanl.gov/105.shtml
  6. C&EN: IT’S ELEMENTAL: THE PERIODIC TABLE – DUBNIUM. (n.d.). C&EN: IT’S ELEMENTAL: THE PERIODIC TABLE – DUBNIUM. http://pubsapp.acs.org/cen/80th/dubnium.html?
  7. Dubnium | CCDC. (n.d.). Dubnium | CCDC. https://www.ccdc.cam.ac.uk/elements/dubnium/
  8. 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
  9. Haynes, W. M. (Ed.). (2014, June 4). CRC Handbook of Chemistry and Physics. https://doi.org/10.1201/b17118
  10. Kaye, G W.C., & Laby, T H. Tables of physical and chemical constants. 15th Edition. United States.
  11. 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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Jay Rana

Jay is an educator and has helped more than 100,000 students in their studies by providing simple and easy explanations on different science-related topics. With a desire to make learning accessible for everyone, he founded Knords Learning, an online learning platform that provides students with easily understandable explanations.

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