The bromine name was derived from the word bromos, meaning “bad smell” or “stench”. Whilst being in group 7, Bromine contains the electron configuration: 1s22s22p63s23p63d104s24p5 or [Ar] 3d104s24p6. The physical appearance of bromine …show more content…
With this being said, bromine is used in day-to-day operations and can be found everyday products. Bromine can be obtained from the ocean (sea water), and although the sodium chloride is found more often; sodium bromide is found but in smaller quantities.
As shown in Figure 2.1 perbromate (BrO4-) is an ion. It carries a molar mass of 143.902 g/mol. Perbromate has 32 valence electrons; bromine carries 7 and oxygen carries 24 plus one since it is an ion. The Lewis structure of perbromate is a tetrahedral. Although the structure contains 32 valence electrons, it obtains a total 1 single bond and 3 double bonds. The oxygens in the Lewis structure follow the octet rule however bromine does not. Bromine (besides hydrogen) does not follow the octet due to certain exceptions.
Bromine can also found in the Earth’s crust. It is an acidic element and can be harmful and cause irritation if encountered. Bromine vapor, if exposed to, can be fatal even over a short period of time. The element reacts violently with alkali metals (Group 1) and can also be very dangerous. The most stable version of bromine is Bromine-79. Bromine-77 holds one of the longest half-lives within the periodic table when at 57