ClF3 Chlorine Trifluoride
Chlorine trifluoride has 5 regions of electron density around the central chlorine atom (3 bonds and 2 lone pairs). These are arranged in a trigonal bipyramidal shape with a 175° F(axial)-Cl-F(axial) bond angle.
The two lone pairs take equatorial positions because they demand more space than the bonds. The result is a T-shaped molecule.