Hybridisation state for SO3? Explain by orbital diagram.

Dear student,
Please find below the solution to the asked query:

S is the central atom in SO3 molecule. The central atom has 6 valence electrons and they combine with 3 Oxygen atoms forming 3 double bonds . The hybridisation of SO3 is sp2 and it has a trigonal planar geometry.
The orbital diagram explains that one s and two p orbitals of one atom hybridise to give three equivalent sp2 hybrid orbitals. These 3 hybrid orbitals are directed towards the three corners of an equivalent triangle . The angle is 120o and the geometry is trigonal planar.



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