Discussion Overview
The discussion revolves around the varying reported values for the atomic radius of iridium, with participants exploring the reasons behind these discrepancies. The scope includes theoretical considerations, measurement methods, and the implications of different definitions of atomic radius.
Discussion Character
- Debate/contested
- Conceptual clarification
- Technical explanation
Main Points Raised
- One participant notes finding values of 1.34, 1.35, and 1.36 pm for the atomic radius of iridium, questioning their correctness.
- Another participant suggests that the atomic radius is not a fixed value and can vary based on the definition used and the measurement method, highlighting the lack of a sharp boundary for atoms.
- A participant expresses confusion over the existence of multiple answers, referencing discrepancies found in sources like Wikipedia.
- One post provides a calculation for the atomic radius based on a body-centered cubic (BCC) structure, arriving at a radius of approximately 2.19 x 10-8 cm.
- Another participant questions the purpose of needing the atomic radius, suggesting that different definitions may be more suitable depending on the intended use.
- A later post reiterates the initial concern about the varying answers, indicating that teachers have provided similar values (1.34 pm, 1.35 pm, and 1.36 pm) and referencing a textbook solution that states 1.36 pm as the answer.
Areas of Agreement / Disagreement
Participants do not reach a consensus on a single value for the atomic radius of iridium, with multiple competing views and reported values remaining in the discussion.
Contextual Notes
Participants highlight the dependence of atomic radius values on definitions and measurement methods, indicating that the variations may stem from these factors rather than a single correct answer.