[Freyloda]

Do all enon compounds form due to octet expansion or will xenon lose electrons sometimes??? I have a question which reads: "Why is xenon able to form compounds, whereas the previous elements in this group cannot do so?"(4)
In this case, octet expansion wouldn't only effect xenon right? because some noble gases do have d sub-levels to carry some electrons.
I doubt xenon will form ions easily but the size would explain xenon being more reactive than the previous noble gases.

[Albert]

"Why is xenon able to form compounds, whereas the previous elements in this group cannot do so

Because of its ionization energy, which is the lowest among the noble gases.
Moreover, Krypton and Xenon have empty accessible d orbitals.

[xiankai]

Because of its ionization energy, which is the lowest among the noble gases.
Moreover, Krypton and Xenon have empty accessible d orbitals.

arent their d orbitals filled? how do empty d orbitals contribute to compound forming?

[Freyloda]

If it has a low ionisation energy doesn't that mean it will form ions??? How does the d orbital become involved if it's an ion and wouldn't the xenon ion be very unstable in the case of say, XeF6?