. The hybridisation of Xe in XeOsubscript3 is
Xe is central atom
Xe has 8 electrons in outermost shell
Every oxygen is attached with xenon by a double bond.
Oxygen is a divalent atom.
V = no. of valence shell electron on the central atom.
M = Number of monovalent atoms attached with the central atom.
C = charge on central atom
So hybridisation is sp3.