Why do the boiling points of the noble gases increase down Group 0?

Answer and explanation

Correct answer: A. The London dispersion forces increase as the number of electrons increases

  1. Step 1: Larger atoms have more electrons.
  2. Step 2: Larger temporary dipoles give stronger London dispersion forces, needing more energy to separate the atoms.
Answer
The London dispersion forces increase as the number of electrons increases.
Why not the others: The covalent bonds become stronger: noble gases are monatomic. The atoms become ions: noble gases do not form ions here. Hydrogen bonds form between atoms: noble gases cannot hydrogen bond.

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