Discussion Overview
The discussion revolves around determining which of the ions Cl-, K+, or the noble gas Ar has the smallest atomic radius. Participants explore concepts related to atomic size, electronegativity, and nuclear charge, with a focus on the implications of these factors on atomic radius.
Discussion Character
- Homework-related
- Conceptual clarification
- Debate/contested
Main Points Raised
- One participant suggests that Argon may have the smallest radius due to its proton count, but expresses uncertainty about this reasoning.
- Another participant argues that Chlorine, being more electronegative, would pull its electrons closer, potentially decreasing its radius, while Potassium's lower electronegativity would allow its electrons to extend outward, increasing its radius.
- A different viewpoint proposes that Argon or Potassium might have smaller radii due to their higher proton counts, dismissing Cl- as a contender.
- One participant notes that all three species have the same number of electrons, differing only in nuclear charge, implying that a higher nuclear charge leads to a stronger attraction and potentially a smaller radius.
- Another participant emphasizes the importance of distinguishing between the charges and the number of electrons in the context of atomic radius.
- Several participants acknowledge confusion regarding the charges and the implications for atomic size, with one admitting to a lapse in focus.
Areas of Agreement / Disagreement
Participants express differing views on which species has the smallest atomic radius, with no consensus reached. Some agree on the importance of nuclear charge and electronegativity, while others question the implications of these factors.
Contextual Notes
There is a lack of clarity regarding the definitions and implications of electronegativity and nuclear charge on atomic radius, as well as the role of electron count in this context.
I am hitting the same wall now and again.