Editing Talk:2719: Hydrogen Isotopes
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Could someone add an explanation of Nydnonen? I don't get it and it's google proof [[Special:Contributions/172.71.210.209|172.71.210.209]] 05:04, 3 January 2023 (UTC)Benzodiakanine | Could someone add an explanation of Nydnonen? I don't get it and it's google proof [[Special:Contributions/172.71.210.209|172.71.210.209]] 05:04, 3 January 2023 (UTC)Benzodiakanine | ||
: Nothing. Was hopeful about {{w|List of Greek and Latin roots in English/N}} but nope. Tried stemming on all the Wiktionaries too. [[Special:Contributions/172.71.158.91|172.71.158.91]] 05:28, 3 January 2023 (UTC) | : Nothing. Was hopeful about {{w|List of Greek and Latin roots in English/N}} but nope. Tried stemming on all the Wiktionaries too. [[Special:Contributions/172.71.158.91|172.71.158.91]] 05:28, 3 January 2023 (UTC) | ||
− | + | : Kudos to whomever figured it out, lol! [[Special:Contributions/172.71.158.231|172.71.158.231]] 08:02, 3 January 2023 (UTC) | |
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Are these to scale? I recently read that the Helium is smaller in terms of measured atomic radius than the Hydrogen. Possibly this is true of Deuterium as well? [[Special:Contributions/172.70.85.45|172.70.85.45]] 06:50, 3 January 2023 (UTC) | Are these to scale? I recently read that the Helium is smaller in terms of measured atomic radius than the Hydrogen. Possibly this is true of Deuterium as well? [[Special:Contributions/172.70.85.45|172.70.85.45]] 06:50, 3 January 2023 (UTC) | ||
:They are almost the same size but it depends on temperature: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.200800063 [[Special:Contributions/162.158.90.153|162.158.90.153]] 08:00, 3 January 2023 (UTC) | :They are almost the same size but it depends on temperature: https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.200800063 [[Special:Contributions/162.158.90.153|162.158.90.153]] 08:00, 3 January 2023 (UTC) | ||
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::[[User:Kynde|Kynde]] is right, it is essentially the charge of the nucleus that determines orbital size, not its mass (which is always thousands of times larger than the mass of the electron). Nuclear mass has only very small effects on the electron orbitals. The most prominent effect probably would be that with a heavier nucleus, the center of mass of the atom would shift a little bit closer to the center of the nucleus (or, in other words, the reduced mass of the electron would increase a little bit), where the "little bit" is on the order of less than 10^-3. Other effects like nuclear size (distribution of the positive charge) or gravitation would be even much smaller.<br>Note that the paper [https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.200800063 cited above] does not deal with the size of atoms. Instead, it describes the effect of temperature on the molecular volume of benzene (C6H6) versus deuterated benzene (C6D6). This makes sense, since the apparent volume of a molecule depends on, among others, the amplitudes of intramolecular vibrations, which in turn depend on bond strength, mean energy (temperature), and atomic mass (hence the isotope effect). However, temperature does not affect the size of an atom. In fact, for a single atom, "temperature" has no meaning at all. --[[Special:Contributions/162.158.86.201|162.158.86.201]] 13:08, 4 January 2023 (UTC) | ::[[User:Kynde|Kynde]] is right, it is essentially the charge of the nucleus that determines orbital size, not its mass (which is always thousands of times larger than the mass of the electron). Nuclear mass has only very small effects on the electron orbitals. The most prominent effect probably would be that with a heavier nucleus, the center of mass of the atom would shift a little bit closer to the center of the nucleus (or, in other words, the reduced mass of the electron would increase a little bit), where the "little bit" is on the order of less than 10^-3. Other effects like nuclear size (distribution of the positive charge) or gravitation would be even much smaller.<br>Note that the paper [https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.200800063 cited above] does not deal with the size of atoms. Instead, it describes the effect of temperature on the molecular volume of benzene (C6H6) versus deuterated benzene (C6D6). This makes sense, since the apparent volume of a molecule depends on, among others, the amplitudes of intramolecular vibrations, which in turn depend on bond strength, mean energy (temperature), and atomic mass (hence the isotope effect). However, temperature does not affect the size of an atom. In fact, for a single atom, "temperature" has no meaning at all. --[[Special:Contributions/162.158.86.201|162.158.86.201]] 13:08, 4 January 2023 (UTC) |