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Here is the Molecular Geometry, Bond angle and Hybridization answers for Exceeding Octet Rule and Resonance Species Homework.
1) NO31-,Trigonal planar, 120°, sp2 hybridized
2) As1F5, Trigonal bipyramidal, 90°, 120°,dsp3 hybridized
3) CO32-,Trigonal planar, 120°, sp2 hybridized
4) SeBr6, Octahedral, 90°, 90°, d2sp3 hybridized