Bromine is a non-metal and a part of the halogen family.
Other members of this family are Chlorine, Fluorine, Iodine and Astatine.
So, like other members of this family, Bromine has a valency of 1.
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Bromine typically has a valency of -1, but it can also exhibit valencies of +1, +3, +5, or +7 in certain compounds.
Bromine typically has a valence of 1, but it may have a valence 3, 5, or 7 in some compounds.
Bromine is a p-block element because its outermost electrons are in the p orbital of its valence shell. It is located in group 17 of the periodic table, known as the halogens, which are nonmetals with similar chemical properties due to their electron configuration. Bromine's properties and behavior align with other p-block elements in the periodic table.
The valency of sulfur is typically 2, 4, or 6, depending on the compound it forms.
-1 valency
The valency of sodium in sodium sulfate is +1, while the valency of sulfate is -2. Therefore, the valency of sodium sulfate as a whole is +2.