Discussion Overview
The discussion revolves around arranging a set of atoms and ions (K+, K, O, S2-, Cl) in order of increasing radius. Participants are also exploring the reasoning behind the position of S2- in relation to the other particles.
Discussion Character
- Debate/contested
- Mathematical reasoning
Main Points Raised
- One participant proposes an arrangement of K+, K, O, S2-, Cl in increasing radius but expresses uncertainty about the explanation required for S2-.
- Another participant suggests a different order: O, Cl, S2- / K+ (considered to be of the same order), K, claiming this is based on their knowledge.
- A later reply elaborates on the reasoning for the position of S2-, stating that it has 16 protons attracting 18 electrons, which may result in a larger radius compared to K+, which has 19 protons attracting 18 electrons.
- The same participant invites corrections or contradictions to their reasoning, indicating uncertainty about their understanding of the topic.
Areas of Agreement / Disagreement
Participants do not seem to agree on the correct order of increasing radius, with multiple competing views presented. The reasoning behind the positions of S2- and K+ is also debated.
Contextual Notes
There are unresolved assumptions regarding the influence of nuclear charge and electron-electron repulsion on atomic and ionic radii, as well as the specific definitions of radius being used in the discussion.