The molecular geometry structures for SeO3, SeO2, and SCl2 are definitively identified as follows: SeO3 exhibits a trigonal planar geometry, SeO2 has a bent (V-shaped) structure, and SCl2 is also bent (V-shaped). These geometries are determined by the number of bonds formed by the central atoms and the presence of lone pairs. Understanding the bonding capabilities of oxygen and the charge states of these molecules is crucial for accurate geometry prediction.
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