The oxidation state of Xe in XeO₃ and bond angle in it are

In XeO₃, the oxidation state of Xenon (Xe) is +6. This is because Oxygen (O) usually has an oxidation state of -2, and there are three oxygen atoms in XeO₃, so the total negative charge contributed by the oxygen atoms is -6. In order for the molecule to be neutral overall, the oxidation state of Xenon must be +6.

The bond angle in XeO₃ is approximately 103 degrees, which is the typical tetrahedral angle for a molecule with four electron pairs around the central atom. In XeO₃, there are three oxygen atoms bonded to the central Xenon atom, and one lone pair of electrons on Xenon. The electron pair geometry is tetrahedral, but because there is one lone pair, the molecular geometry is trigonal pyramidal, with a bond angle of approximately 103 degrees.