Virtual colors for atom representation?

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Discussion Overview

The discussion revolves around the representation of atoms using color palettes, specifically in the context of molecular visualization. Participants explore existing conventions and seek information on standard color assignments for various elements.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant inquires about a standard color palette for atom representation, suggesting common colors like white for hydrogen and red for oxygen.
  • Another participant states that there is no universally accepted standard for atom color representation.
  • A reference to Atkins' Molecules is provided, listing specific colors for various elements: white/gray for H, black for C, blue for N, red for O, light blue for F, orange for P, yellow for S, and green for Cl.
  • A participant asks about the colors for potassium (K) and sodium (Na), noting that sodium is represented as purple in Atkins' work.
  • Discussion includes a suggestion to consider flame test colors for potassium and sodium as a basis for their representations.
  • A participant mentions that in biological contexts, programs like PyMol use yellow for carbon, white for hydrogen, red for oxygen, blue for nitrogen, orange for sulfur or phosphorus, and green for metal ions or halogens.

Areas of Agreement / Disagreement

Participants do not reach a consensus on a standard color palette, with multiple viewpoints and references to different sources and contexts remaining present throughout the discussion.

Contextual Notes

There are limitations regarding the lack of a universally accepted standard and the dependence on specific contexts (e.g., molecular visualization vs. biological applications) for color assignments.

somasimple
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Hi there,

I suppose there is a standard palette for atoms representation?
i.e. white for hydrogen, red for oxygen?

Is there a site or a link that provides such information?
 
Chemistry news on Phys.org
No such standard as far as I am aware.
 
If you're interested in precedent, Atkins uses in Atkins' Molecules white/gray for H, black for C, blue for N, red for O, light blue for F, orange for P, yellow for S, and green for Cl.
 
That's a beginning! Nothing about K and Na?
 
Sodium was purple. He didn't write about any molecules with potassium!
 
Thanks, I'll find a color for potassium.
 
Carbon black, chlorine green - these are colors more or less related to the elements. You may think about colors potassium and sodium give in the flame test.
 
In biology, programs that display crystal structures of protein and nucleic acids generally use yellow for carbon, white for hydrogen, red for oxygen, blue for nitrogen, orange for sulfur or phosphorus, and green for things like metal ions, halogens, or other small ions that may be in the structure. (the specific program I'm referring to is PyMol [www.pymol.org][/URL])
 
Last edited by a moderator:
thanks for information.
 

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