Among xenon fluorides the most reactive towards hydrolysis is

Xenon hexafluoride (XeF₆) is more reactive towards hydrolysis because of the nature of its molecular structure. XeF₆ is a highly polar molecule due to the large difference in electronegativity between xenon and fluorine atoms, and it has six highly reactive fluorine atoms surrounding a central xenon atom.

When XeF₆ comes into contact with water molecules, the highly polar water molecules interact with the fluorine atoms in XeF₆, breaking the Xe-F bonds and forming new Xe-O bonds with the water molecules. This results in the formation of xenon oxyfluoride (XeOF₄) and hydrofluoric acid (HF).

The reaction of XeF₆ with water is exothermic, meaning it releases heat, which further accelerates the reaction. Additionally, XeF₆ is a Lewis acid, which means it can accept electrons from a Lewis base such as water. The Lewis acidity of XeF₆ further increases its reactivity towards hydrolysis.

Overall, the combination of XeF₆'s highly polar and reactive molecular structure, the exothermic nature of the reaction, and its Lewis acidity make it highly reactive towards hydrolysis.