This is the Br2 Lewis structure.
Looking on the periodic table, Bromine is
in Group 7 or 17.
It has 7 valence electrons.
We have two of them though.
Multiply that by 2, for a total of 14 valence
electrons for the Br2 Lewis structure.
First, we'll draw two Bromine atoms next to
each other.
We have 14 valence electrons for Br2.
We'll put two between atoms to form a chemical
bond.
Then we'll go around the atoms: 2, 4, 6, 8
and 10, 12, 14.
So we've used all 14 valence electrons.
This Bromine right here, it has 8 valence
electrons so its octet is full. and then this
Bromine right here also has 8 valence electrons,
so its octet is full.
This is the correct Lewis structure for Br2,
Bromine gas, or dibromine.
This is Dr. B., and thanks for watching.
