The conversation between human and AI assistant.
[|Human|] Rank the following elements according to the atomic radius: Oxygen, Neon, Helium
[|AI|] Here are the three elements ranked by atomic radius, in descending order (largest to smallest):
1. Neon
2. Oxygen
3. Helium
[|Human|] 
Rank the following elements according to the atomic radius: Oxygen, Neon, Helium