Bromine element (Br) is in group 17 and period 4 of a periodic table. Bromine is in the p-block and it is classified as a halogen group element on the periodic table.
There is a lot more information related to bromine which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Bromine element (Information Table)
- Bromine element in Periodic table
- Facts about Bromine
- Properties of Bromine
- Uses of Bromine
Bromine Element (Information Table)
The important data related to bromine element is given in the table below.
|Appearance of bromine||Reddish brown color|
|Atomic number of bromine||35|
|Symbol of bromine||Br|
|Atomic mass of bromine||79.904 u|
|Protons, Neutrons & Electrons in bromine||Protons: 35, Neutrons: 45, Electrons: 35|
|State of bromine (at STP)||Liquid|
|Group number of bromine in periodic table||17|
|Period number of bromine in periodic table||4|
|Block of bromine in periodic table||p-block|
|Category of bromine||Nonmetals (halogens)|
|Bohr model or Electrons per shell or Electrons arrangement in bromine||2, 8, 18, 7|
|Electron configuration of bromine||[Ar] 3d10 4s2 4p5|
|Orbital diagram of bromine|
|Valence electrons in bromine||7|
|Electronegativity of bromine (on pauling scale)||2.96|
|Atomic radius of bromine (van der Waals radius)||183 picometers|
|Density of bromine (Br2)||3.12 g/cm3|
|1st ionization energy of bromine||11.814 eV|
|Main isotope of bromine||79Br (51%) and 81Br (49%)|
|Melting point of bromine (Br2)||265.8 K or -7.2 °C or 19 °F|
|Boiling point of bromine (Br2)||332 K or 58.8 °C or 137.8 °F|
|Crystal structure of bromine||Orthorhombic|
|Discovery of bromine||By Antoine Jerome Balard and Carl Jacob Lowig (in 1825)|
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).
Bromine element in Periodic table
The Bromine element (Br) has the atomic number 35 and is located in group 17 and period 4. Bromine is a nonmetal and it is classified as a halogen element.
Click on above elements in the periodic table to see their information.
Facts about bromine
Here are a few interesting facts about bromine element.
- Bromine was named on the basis of the Greek word “bromos”.
- Bromine is the nonmetal that is in liquid state at STP.
- Bromine and mercury are the only elements on the entire periodic table that are in liquid state at STP.
- Bromine is the 3rd lightest halogen in the periodic table.
- Bromine is in liquid state and it is 3 times denser than water.
- Bromine is the 44th most abundant element present in the earth’s crust.
- Bromine is present in the earth’s crust at a concentration of 2.4 ppm.
- Pure bromine is toxic and it can burn the skin.
- Bromine atoms are more harmful for the ozone layer as compared to that of chlorine atoms.
Properties of bromine
Here is a list of some physical properties and chemical properties of bromine.
Physical properties of bromine
- Bromine is a liquid nonmetal and it has a reddish-brown appearance.
- The melting point and boiling point of bromine is -7.2 °C and 58.8 °C respectively.
- The vapors of bromine irritates our eyes and it also has a very pungent smell.
- Bromine has 2 stable isotopes (79Br and 81Br).
- The bromine has a density of 3.12 g/cm3 and its atomic mass is 79.904 u.
Chemical properties of bromine
- Bromine is not found in its free state due to its high reactivity.
- Bromine always exists as a Br2 molecule.
- The electron configuration of bromine is [Ar] 3d10 4s2 4p5 (with electron shell arrangement: 2, 8, 18, 7) and it requires only one electron to get the complete octet in the outer shell.
- Bromine produces salts when it reacts with metals.
- The most common oxidation state of bromine is -1.
Uses of bromine
Here are some uses of the bromine element.
- Bromine is used in agricultural industries to make insecticides as well as other chemicals.
- Bromine is also used for purifying the water.
- In ancient times, bromine was also used as a dye material.
- Bromine can be added to swimming pools as an alternative to chlorine.
- Bromine is also used in making of flame retardant material.
- Silver bromide is used in photography.
- Bromine – Wikipedia. (2016, January 5). Bromine – Wikipedia. https://en.wikipedia.org/wiki/Bromine
- It’s Elemental – The Element Bromine. (n.d.). It’s Elemental – the Element Bromine. https://education.jlab.org/itselemental/ele035.html
- 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
- Periodic Table of Elements: Los Alamos National Laboratory. (n.d.). Periodic Table of Elements: Los Alamos National Laboratory. https://periodic.lanl.gov/35.shtml
- Atomic Weight of Bromine | Commission on Isotopic Abundances and Atomic Weights. (n.d.). Atomic Weight of Bromine | Commission on Isotopic Abundances and Atomic Weights. https://ciaaw.org/bromine.htm
- Atomic Data for Bromine (Br). (n.d.). Atomic Data for Bromine (Br). https://physics.nist.gov/PhysRefData/Handbook/Tables/brominetable1.htm
- C&EN: IT’S ELEMENTAL: THE PERIODIC TABLE – BROMINE. (n.d.). C&EN: IT’S ELEMENTAL: THE PERIODIC TABLE – BROMINE. https://pubsapp.acs.org/cen/80th/bromine.html?
- P. (n.d.). Bromine. Bromine | Br2 – PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/24408
- 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
- CDC | Facts About Bromine. (2018, April 4). CDC | Facts About Bromine. https://emergency.cdc.gov/agent/bromine/basics/facts.asp
- Bromine – Element information, properties and uses | Periodic Table. (n.d.). Bromine – Element Information, Properties and Uses | Periodic Table. https://www.rsc.org/periodic-table/element/35/bromine
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 chemistry learning platform that provides students with easily understandable explanations.
Read more about our Editorial process.