What are the oxidation states of sodium, aluminium, bromine, and phosphorus in naturally-occurring compounds?
Rev answers You will remember from your work on the Periodic Table that some elements have fixed oxidation states and others have variable one. The Group 1 elements have fixed oxidation states of 1 while the top of Group 3 are fixed at 3. However many non-metals have more than one oxidation state. Thus: • Sodium-fixed oxidation state all compounds natural or manufactured oxidation state +1. • Aluminium-fixed oxidation state all compounds natural or manufactured oxidation state +3. For aluminium these tend to be bauxite (oxide), cryolite (fluoride) or aluminosilicate rocks such as feldspar. • Phosphorus is a non-metal with more than one oxidation state, but all the naturally-occurring phosphorus is found as phosphate(V) , PO43. • Bromine has a large range of oxidation states from 1 to +5. However, bromide ( 1) in sea water is the only real source of the element. Risk assessment Before attempting any practical work based on the advice and suggestions on this website, you must do the foll
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