What is the orbital hybridization in BrCl3?
In bromine trichloride, or
As you can see, the remaining 4 valence electrons are placed on bromine as lone pairs. This means that bromine will have a total of 10 valence electrons, which is possible because it can have an expanded octet.
So, bromine has 2 lone pairs, and 3 single bonds, which means it has a steric number of 5. The steric number will also tell you how many hybrid orbitals an atom has. In this case, 5 hybrid orbitals would correspond to an
Because of the two lone pairs of electrons, the molecular geometry of the bromine trichloride molecule will be T-shaped, not trigonal bipyramidal.