Timeline for Shape of the P1/2 Orbital
Current License: CC BY-SA 3.0
13 events
| when toggle format | what | by | license | comment | |
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| Sep 4, 2016 at 15:00 | vote | accept | ron | ||
| Sep 4, 2016 at 8:10 | answer | added | Nicolau Saker Neto | timeline score: 25 | |
| Aug 31, 2016 at 14:26 | history | edited | ron |
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| Aug 31, 2016 at 13:42 | comment | added | Nicolau Saker Neto | A more thorough explanation, along with multiple graphs, drawings and pictures of several relativistic orbitals can be found in "Pictorial Representations of the Dirac Electron Cloud for Hydrogen-Like Atoms". Unfortunately I can't grasp the matter well enough to write a decent answer. | |
| Aug 31, 2016 at 13:24 | comment | added | Nicolau Saker Neto | The article "Contour diagrams for relativistic orbitals" indeed states that $\mathrm{np_{1/2}}$ orbitals (one per shell) are spherically symmetric, while the $\mathrm{np_{3/2}}$ orbitals (two per shell) are shaped like the familiar dumbbells. I don't particularly know why this is the case; I thought relativistic corrections introduced only small amounts of "smearing" to the non-relativistic orbitals (e.g. turning orbital nodes into pseudo-nodes, where the wavefunction is almost but not quite zero) | |
| Aug 31, 2016 at 12:48 | history | edited | ron | CC BY-SA 3.0 |
typo, formatting
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| Aug 29, 2016 at 13:32 | comment | added | permeakra | They 'split p shell, using sum of spin and angular moments' instead of common non-relativistic quantum chemistry concept of the two being independent variables. Spin and angular momentum may be considered indepenedent for lighter atoms, but once relativistic effects become significant (afaik, around copper), this is no longer the case. Consequently, instead of 3 pairs of spin-orbitals with only spin being opposed in the pairs we should consider 6 spin-orbitals of potentially very complex shape. In case you are interested enough in the matter (I'm not), you should delve into relativistic QC. | |
| Aug 29, 2016 at 4:16 | answer | added | ringo | timeline score: 6 | |
| Aug 29, 2016 at 4:13 | history | tweeted | twitter.com/StackChemistry/status/770112172768825344 | ||
| Aug 29, 2016 at 1:59 | history | edited | ron | CC BY-SA 3.0 |
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| Aug 29, 2016 at 1:51 | history | edited | ron | CC BY-SA 3.0 |
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| Aug 29, 2016 at 1:12 | history | edited | ron | CC BY-SA 3.0 |
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| Aug 29, 2016 at 1:06 | history | asked | ron | CC BY-SA 3.0 |