Which molecule has an octahedral electron pair geometry but a square planar molecular shape?
In XeF₄ , xenon has 6 electron pairs (4 bonding, 2 lone) with sp³d² hybridization, giving an octahedral electron geometry and a square planar shape.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2