(i) Interhalogen compound of the type `XX_(5)` possesses square pyramidal structure.
(ii) The central halogen atom `X (X = Br, I)` undergoes `sp^(3)d^(2)` hybridisation forming six hybrid orbitals.
(iii) One hybrid orbital is occupied by a lone pair of electrons.
Ground state of Br
Consider `IF_(5)` molecule :