Answer :
The subscript 2 in [tex]Br_2[/tex] indicates that two atoms of bromine are joined together.
[tex]Br_2[/tex], which is a bromine compound, is formed by the combination of two bromine atoms.
At normal temperature and pressure, the original colour of Bromine ([tex]Br_2[/tex]) is a red-brown liquid.
When there is a subscript "2," it signifies that a molecule is made up of two Bromine atoms.
We never use subscripts of "1" while writing the chemical formula, since they are only used when more than one atom is being represented.
When referring to a diatomic molecule, we use the element's symbol and add the subscript "2" to denote the bond between two of that element's atoms.
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