Which molecule has a bond angle of approximately 90° in a square pyramidal shape?
In IF₅, iodine is sp³d² hybridized with 6 electron pairs (5 bonding, 1 lone), forming a square pyramidal shape. The axial-equatorial F-I-F bond angles are ~90°, slightly reduced by lone pair repulsion.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Covalent Bonding - Bond Parameters and Polarity and Fajan's Rule
