Q. In a regular octahedral molecule, $ M{{X}_{6}} $ the number of $ X-M-X $ bonds at $ 180{}^\circ $ is
ManipalManipal 2007Chemical Bonding and Molecular Structure
Solution:
In octahedral structure $ M{{X}_{6}}, $ the six hybrid orbitals $ (s{{p}^{3}}{{d}^{2}}) $ are directed towards the corners of a regular octahedral with an angle of $ 90{}^\circ $ . According to following structure of $ M{{X}_{6}}, $ the number of $ X-M-X $ bonds at $180^\circ$ must be three.
