 
       
      
    Explain the shape of 
The central atom in  is bromine. Its hybridization is 
.
In total, there are 7 valence electrons in a Br atom out of which 5 valence electrons are used for making a pair with the F atoms, and two valence electrons are used for making a lone pair of electrons. We know that the bond pair and lone pair repel each other. Hence, the shape is square pyramidal.
