Question

Which of the following noble gases exhibits higher oxidation states ?

• A. Ne
• B. Ar
• C. Kr
• D. Xe

Hint:

Xenon has low ionisation enthalpy and can use its empty d orbitals.

Answer 1

The Correct Option is D

Step 1: Trend in ionisation enthalpy:
Down the group the ionisation enthalpy falls, so electrons can be removed more easily by a strongly electronegative element like fluorine.

Step 2: Apply:
Only Xe has a low enough value to be promoted to +4 and +6. This gives option (D).

Final Answer:
Xe. \[ \boxed{\text{(D)}} \]