Ionisation energy values are given for Xenon (Xe) and Radon (Rn)
`{:("Element","Xe","Rn"),("IE(KJ/mol)", 1169,1036):}`
Predict a suitable reasons for the fact that the chemistry of Rn has not been studied significantly while that of Xe has boon extensively studied.

Options

A. (1) Rn appears to bo more reactive
B. (2) Xe is less reactive than Rn
C. (3) Rn isotopes have shorter lifetimes
D. (4) Rn Is heavior than Xe.

Explanation

To answer the question regarding why the chemistry of Radon (Rn) has not been studied significantly compared to Xenon (Xe), we can analyze the provided ionization energy values and some fundamental properties of these noble gases.

### Step-by-Step Solution:

1. **Understanding Ionization Energy**:
- Ionization energy (IE) is the energy required to remove the outermost electron from an atom. The higher the ionization energy, the more difficult it is to remove an electron.

2. **Comparing Ionization Energies**:
- From the data given:
- Ionization Energy of Xenon (Xe) = 1169 kJ/mol
- Ionization Energy of Radon (Rn) = 1036 kJ/mol
- Since the ionization energy of Xenon is higher than that of Radon, it indicates that Radon has a lower tendency to hold onto its outermost electrons.

3. **Reactivity of Noble Gases**:
- Noble gases are generally considered inert due to their full valence shell. However, lower ionization energy in Radon suggests that it can lose its outermost electron more easily than Xenon.
- This property implies that Radon could potentially be more reactive than Xenon, but the reactivity of noble gases is not extensively explored due to their stability.

4. **Short Lifetimes of Radon Isotopes**:
- Radon has isotopes that are radioactive and have short half-lives. This makes it challenging to study Radon in laboratory conditions as it decays quickly, limiting the amount of time available for experimentation.

5. **Heaviness of Radon**:
- Radon is heavier than Xenon, which can complicate its handling and experimentation. The heavier noble gases tend to be less accessible for chemical reactions due to their physical properties.

6. **Conclusion**:
- The combination of Radon's lower ionization energy, its radioactivity, and its physical properties contribute to the limited study of its chemistry compared to Xenon, which has been more stable and accessible for research.

### Final Answer:
The chemistry of Radon has not been studied significantly compared to Xenon due to its lower ionization energy making it potentially more reactive, the presence of radioactive isotopes with short lifetimes, and its heavier atomic mass which complicates experimental conditions.