Final answer:
Xenon (Xe) has the highest boiling point among the listed noble gases, as boiling points increase with larger atomic numbers due to stronger London dispersion forces. The correct option in the final answer is D. Xe.
Step-by-step explanation:
To determine which one has the highest boiling point among He (Helium), Ne (Neon), Kr (Krypton), and Xe (Xenon), we look at the periodic table and trends in boiling points across the noble gases.
The boiling points of noble gases increase with increasing atomic number due to an increase in the London dispersion forces, which are a type of van der Waals force. This happens because larger atoms have more electrons that can form instantaneous dipoles, thereby increasing the strength of the intermolecular attractions.
Given that trend, Xenon (Xe) has the highest boiling point among the given options, followed by Krypton (Kr), then Neon (Ne), and lastly Helium (He), which has the lowest. The boiling points of these noble gases, in order from lowest to highest, are He (-269°C), Ne (-246°C), Kr (-153°C), and Xe (-108°C). Therefore, the correct option in our final answer is D. Xe.