Noble Gas Configuration for Uranium: Tips and Tricks to Complete [Rn] 7s2

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Discussion Overview

The discussion revolves around completing the noble gas electron configuration for uranium, specifically focusing on the sequence following [Rn] 7s2. Participants explore the stability of electron configurations and the order of filling orbitals.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants seek assistance in completing the noble gas configuration for uranium, indicating uncertainty about the correct sequence after [Rn] 7s2.
  • One participant questions the stability of the 5f3 configuration compared to 5f4, drawing a parallel to the stability of half-filled orbitals like 3d5.
  • A later reply corrects an earlier misunderstanding about the order of filling, stating that the correct configuration is [Rn] 7s2 6d1 5f3, emphasizing the sequence of 6d before 5f.

Areas of Agreement / Disagreement

Participants express differing views on the stability of various electron configurations, and there is no consensus on the reasoning behind the order of orbital filling. The discussion remains unresolved regarding the broader implications of these configurations.

Contextual Notes

Participants reference external resources for clarification, indicating potential limitations in their understanding of electron configurations and stability principles. There are unresolved assumptions about the stability of specific configurations.

GLprincess02
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Could someone please help me finish the nobel gas configuration for uranium? I get as far as [Rn] 7s2, but I can't figure out what goes next.
 
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What is the reason for this structure? I assume the 5F3 is more stable than 5f4, kind off like the half filled 3d5 taking preference.

On a related note I was looking here http://www.chemguide.co.uk/atoms/properties/ionstruct.html#top, and intuitively I'd though of thought when Fe beomces Fe3+ that a 3d atom would be lost before the 4s atom since that 3d54s2, is more stable than 3d64d1?

note: been a while since I did any chemistry.
 
Ok I see what my mistake was...I had the first part right, but then I kept putting 5f before 6d. In this case, 5f goes afterward, so the configuration is actually [Rn] 7s2 6d1 5f3.

Thanks for the help. :)
 

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