Question

Which among the following noble gases reacts with fluorine to give crystalline fluorides?

• A. Ne
• B. He
• C. Xe
• D. Ar

Hint:

Xenon is the most reactive noble gas due to its low ionization energy and large atomic size. It forms stable compounds with fluorine and oxygen.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
We need the noble gas that forms crystalline fluorides when reacted with fluorine.

Step 2: Key Formula or Approach:
Among noble gases, only xenon (and to a lesser extent krypton) forms stable fluorides. Xenon fluorides (XeF\(_2\), XeF\(_4\), XeF\(_6\)) are crystalline solids.

Step 3: Detailed Explanation:
- Ne, He, Ar do not form stable fluorides under normal conditions. - Xe reacts directly with F\(_2\) to give XeF\(_2\), XeF\(_4\), XeF\(_6\) – all crystalline.

Step 4: Final Answer:
Xenon (Xe), option (C).