CHEMISTRY

__Bromine__

Bromine is the name of the element number 35 in the Periodic Table. It's Chemical Symbol is Br and has an Atomic Number (Z) of 35 and an Atomic Mass (A) of 79. By this information we can conclude that Bromine is an Isotope. Ther name Bromine cames from the Greek Bromos. Bromine is a liquid element, this element is the only non-metal liquid element. It is a heavy, dangerous red or reddish liquid. The red vapour that Bromine produces has an unpleasent smell and the vapour irritates the eyes, nose and throa, also if Bromine has contact with the skin it can burn it. In other words Bromine is a poisonous elemts that can cause skin burns. Bromine is an element that is less reactive than Chlorine but more reactive than Iodine. This element is located on group 17 or VIIA, that means that this element has 7 electrons at the last Energy Shell, the group name is Halogen. Bromine is in period number four, which means that the elemnt has four Energy levels.Bromine is located in block "P". Bromine has in the first energy level 2 electrons, in the second 8, in the third 18 and in the last 7. The History of Bromine. Bromine was produces by a young chemistry student named Carl Lowing. When he showed the product to his professor, Leopold Gmelin, he realized that it was a new subtance so he said to Lowing to prepare more, but Lowing has so many responsabilities and he delayed. Later another chemist named Antonie J- Balard, published a paper in 1826 describing the element so he was credited with the discovery. Bromine have different uses some of the uses are:

- Bromine compounds are used as pesticides. - Dyestuffs -Water purification compounds. -Flame-retardants in plastics. -Potassium bromide is used in photography.





__BIBLIOGRAPHY

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