Electron-Dot Diagram for Bromine


Electron-Dot Diagram for Bromine

Bromine has 35 electrons. Its electron-configuration diagram is [Ar]4s23d104p5. [Ar] represents 18 of the 35 electrons. See figure 3. There are 17 valence electrons in the 4s, 3d and 4p sublevels. Two of the electrons are in the 4s, ten electrons are in  the 3d and five electrons are in the 4p. The electron-dot diagram will display only the electrons in the s and p orbitals of the valence shell. The sum of electrons in the 4s and 4p is seven. This means there will be seven dots in the elecron-dot diagram.  Two dots to the left, two dots above, two dots to the right and one dot to the bottom of the symbol for bromine. See figure 3. The d or f sublevel electrons are not represented in the electron-dot diagram.


© Pat Thayer 2014-2016