2639: Periodic Table Changes - Revision history

42.book.addict at 17:01, 10 September 2025

2025-09-10T17:01:57Z

160.39.41.182: /* Transcript */ typo fix

2025-08-19T04:41:04Z

‎Transcript: typo fix

141.101.76.77: /* Table of the proposed changes */ Consistent case.

2024-11-29T12:48:32Z

‎Table of the proposed changes: Consistent case.

CategoryGeneral: Periodic tables and chemical equations almost unavoidably have lowercase letters.

2024-11-29T12:19:59Z

Periodic tables and chemical equations almost unavoidably have lowercase letters.

ConscriptGlossary: All are rare earth metals.

2024-11-29T07:58:09Z

All are rare earth metals.

CalibansCreations: /* Table of the proposed changes */ wikilinks

2024-10-10T11:38:28Z

‎Table of the proposed changes: wikilinks

Natg19: /* Transcript */ add to cat

2024-08-22T01:28:26Z

‎Transcript: add to cat

172.68.243.46: /* Table of the proposed changes */

2024-03-18T17:04:24Z

‎Table of the proposed changes

172.70.175.155: /* Explanation */ A complete eighth period would be 50 elements (if we keep the current format), not 49. It would go from element 119 to 168, inclusive.

2023-10-19T21:25:51Z

‎Explanation: A complete eighth period would be 50 elements (if we keep the current format), not 49. It would go from element 119 to 168, inclusive.

FaviFake: Fixed new category name

2023-06-27T07:08:20Z

Fixed new category name

@@ Line 23: / Line 23: @@
 |Move helium over here. It fits so nicely!||Helium is moved from the upper right corner to the second column next to hydrogen.  However, the reason it is placed at the far-right Group 18 and not Group 2 is because it is a {{w|noble gas}}, rather than a reactive {{w|alkaline earth metal}}. You could say helium is in group 2 because it has two electrons in its outer shell, but normal periodic tables place it in group 18, the noble gases, with which it has far more in common. Hydrogen has similar problems being in group 1, as it's a non-metal and the elements below it are metals which don't have much in common with it chemically. There are periodic tables that show hydrogen floating above the periodic table for that reason.
-Group 18 was not known at the time of the original table, which used I-VII (1-7) for the otherwise full-height columns, which turns out to reflect the number of free ('valence') electrons in their outer 'orbit', in one useful understanding of the atomic model. When added, the new final column was called either VIII (having a full outer shell) or Group 0 (having none free) and placed to the right of VII. It was originally thought that these so-called "noble gases" (no relation to Alfred Nobel of explosives and science prize fame{{fact}}) were unable to react with other elements. However, xenon compounds were discovered in 1962, and many other {{w|noble gas compounds}} have been discovered since then under a variety of conditions.
+Group 18 was not known at the time of the original table, which used I-VII (1-7) for the otherwise full-height columns, which turns out to reflect the number of free ('valence') electrons in their outer 'orbit', in one useful understanding of the atomic model. When added, the new final column was called either VIII (having a full outer shell) or Group 0 (having none free) and placed to the right of VII. It was originally thought that these so-called "noble gases" (no relation to Alfred Nobel of explosives and science prize fame) were unable to react with other elements. However, xenon compounds were discovered in 1962, and many other {{w|noble gas compounds}} have been discovered since then under a variety of conditions.
 From the fourth row downwards the inserted block of Transition Metals represent a larger electron shell with more positions for free electrons and those elements to the right would have more electrons than those above them, by this measure, but their physical properties are still best dictated and aligned by the complement to the valence (i.e. the gap-size). The current numbering system shows the outer-shell electrons accurately in the rows where the ten new columns are, but the upper rows of columns 13-18 have ten more (or sixteen more, for Helium) than is the case. Similarly, once lanthanides and actinides are considered, the group number and outer-shell count becomes disconnected again in the opposite way. But it still seems useful enough to currently label in this manner under current {{w|IUPAC}} guidance.

@@ Line 98: / Line 98: @@
 :[The symbol of tungsten is changed from W to Tg.]
 :That W annoys me
-:[Neodymium, in the lanthanides/actinides block, is independantly highlighted, with an arrow and new outline suggesting it is to be moved directly below the Nickel column of the main table.]
+:[Neodymium, in the lanthanides/actinides block, is independently highlighted, with an arrow and new outline suggesting it is to be moved directly below the Nickel column of the main table.]
 :Neodymium can stay—magnets are cool
 :[Arrows and outlines indicating that parts of the other lanthanide and actinide rows are also to be placed under the bottom of the main table, to make this a new and complete single row. Those not included, and not otherwise obscured by floating text, are scribbled over.]

@@ Line 69: / Line 69: @@
 |-
 |3.4% of all elements are named after Ytterby, Sweden (pop. 3,000). Let's keep Yttrium, but rename the other 3 after bigger cities (Tokyium, Delhium, and Jakartium?) to be more fair.
-|Four elements -- yttrium (Y), ytterbium (Yb), terbium (Tb) and erbium (Er) -- are named after {{w|Ytterby}}, a Swedish village where they were discovered. (Even worse, all are rare earth metals.) Four of the other rare earth metals, Scandium (Sc), thulium (Tm), holmium (Ho) and gadolinium (Gd) were isolated from minerals found in the same quarry. Randall suggests naming 3 of them after some other major world cities, despite those cities having no connection to those elements.
+|Four elements -- yttrium (Y), ytterbium (Yb), terbium (Tb) and erbium (Er) -- are named after {{w|Ytterby}}, a Swedish village where they were discovered. (Even worse, all are rare earth metals.) Four of the other rare earth metals, scandium (Sc), thulium (Tm), holmium (Ho) and gadolinium (Gd) were isolated from minerals found in the same quarry. Randall suggests naming 3 of them after some other major world cities, despite those cities having no connection to those elements.
 * Terbium (Tb) -> Tokyium (Ty) - Tokyo
 * Erbium (Er) -> Delhium (Dh) - Delhi

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 [[Category:Chemistry]]
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 |-
 |3.4% of all elements are named after Ytterby, Sweden (pop. 3,000). Let's keep Yttrium, but rename the other 3 after bigger cities (Tokyium, Delhium, and Jakartium?) to be more fair.
-|Four elements -- yttrium (Y), ytterbium (Yb), terbium (Tb) and erbium (Er) -- are named after {{w|Ytterby}}, a Swedish village where they were discovered. Scandium (Sc), thulium (Tm), holmium (Ho) and gadolinium (Gd) were isolated from minerals found in the same quarry. Randall suggests naming 3 of them after some other major world cities, despite those cities having no connection to those elements.
+|Four elements -- yttrium (Y), ytterbium (Yb), terbium (Tb) and erbium (Er) -- are named after {{w|Ytterby}}, a Swedish village where they were discovered. (Even worse, all are rare earth metals.) Four of the other rare earth metals, Scandium (Sc), thulium (Tm), holmium (Ho) and gadolinium (Gd) were isolated from minerals found in the same quarry. Randall suggests naming 3 of them after some other major world cities, despite those cities having no connection to those elements.
 * Terbium (Tb) -> Tokyium (Ty) - Tokyo
 * Erbium (Er) -> Delhium (Dh) - Delhi

@@ Line 75: / Line 75: @@
 Randall may be using using 2010 census data (2946); Ytterby mine is located on the island of Resarö, found under 0187TB103 in table [https://www.scb.se/en/finding-statistics/statistics-by-subject-area/environment/land-use/localities-and-urban-areas/pong/tables-and-graphs/localities-2020-population-land-area-population-density-per-locality/ MI0810], population 3212 (2020 census).
-Interestingly, [https://en.wikipedia.org/wiki/Isaac_Asimov Isaac Asimov] made essentially the same remark in his science essay ''The Multiplying Elements'', saying that it was a waste of element names that could have been used to honor great contributors to chemistry. One obvious candidate would be [https://en.wikipedia.org/wiki/Henry_Moseley Henry Moseley] (mentioned in another of Asimov's essays, ''The Nobel Prize That Wasn't'') who used early X-ray spectroscopy to resolve the confusion over rare earth elements, finally put the Periodic Table on a firm ground and conceived the idea of "Atomic Number".
+Interestingly, {{w|Isaac Asimov}} made essentially the same remark in his science essay ''The Multiplying Elements'', saying that it was a waste of element names that could have been used to honor great contributors to chemistry. One obvious candidate would be {{w|Henry Moseley}} (mentioned in another of Asimov's essays, ''The Nobel Prize That Wasn't'') who used early X-ray spectroscopy to resolve the confusion over rare earth elements, finally put the Periodic Table on a firm ground and conceived the idea of "Atomic Number".
 |-
 |Inserting the lanthanides and actinides properly makes the table too wide. Triage is needed. Each element will be offered free training to help adjust to its new column.||Though the lanthanides and actinides typically are placed underneath the bottom of the table, they actually belong in the 6th and 7th rows of the table between the 2nd and 3rd columns, as they are numbered elements 57-70 and 89-102. This section of the table is typically excised to give the overall shape more appealing dimensions; including this section in the main table [https://sciencenotes.org/wp-content/uploads/2017/01/PeriodicTableExtended.png extends the length dramatically]. This proves rather unwieldy especially when referencing the table for the lower-numbered elements, which are generally more common, and/or elements far to the sides of the table, which are often more influential in chemical reactions. Randall recommends that a subset of these elements be placed in a new row at the bottom of the table (making them elements 93-110) and they will receive "training" to adjust to their new columns.

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 Another element whose symbol doesn't match its English name. "Wolfram" is the name for tungsten in some languages and is derived from the mineral wolframite, which comes from the name "wolf rām" in Middle High German (wolf soot).
 Oddly, despite changing Latin and German abbreviations to English, Randall does not change the symbol for mercury (Hg from the Greek "hydrargyrum").
 |-

@@ Line 12: / Line 12: @@
 Other modifications make up new elements or remove existing ones from the table, which would not be a reasonable decision given that the periodic table is supposed to include all existing elements, whether they make the table neater or they don't. See explanation for the proposed changes in the [[#Table of the proposed changes|table]] below.
-The title text suggests discovering elements only in entire rows at once, a suggestion which is far more unreasonable than it appears on its surface. Elements with more protons than 118 could be discovered in future by collisions in particle accelerators, but as of right now, the chances of finding or synthesizing samples of such elements lasting longer than 10 quadrillionths (10<sup>−14</sup>) of a second is looking rather grim. Furthermore, the theoretical 8th period is expected to contain 49 elements, more than any row in the current 7-period table. Taking this all into account, discovering an entire row's worth of elements all at once is nothing short of a herculean undertaking, and its difficulty only grows in orders of magnitude for each successive row. With all that said, however, elements beyond 118 are unlikely to have practical applications in science and engineering due to their vanishingly short lifespan and may probably only ever serve as intellectual curiosities. Thus, refraining from updating the periodic table prior to the discovery of the entire 8th period is not a terrible sacrifice to make in the name of preserving the table's visual aesthetics (provided data of new elements are recorded and catalogued in other ways).
+The title text suggests discovering elements only in entire rows at once, a suggestion which is far more unreasonable than it appears on its surface. Elements with more protons than 118 could be discovered in future by collisions in particle accelerators, but as of right now, the chances of finding or synthesizing samples of such elements lasting longer than 10 quadrillionths (10<sup>−14</sup>) of a second is looking rather grim. Furthermore, the theoretical 8th period is expected to contain 50, more than any row in the current 7-period table. Taking this all into account, discovering an entire row's worth of elements all at once is nothing short of a herculean undertaking, and its difficulty only grows in orders of magnitude for each successive row. With all that said, however, elements beyond 118 are unlikely to have practical applications in science and engineering due to their vanishingly short lifespan and may probably only ever serve as intellectual curiosities. Thus, refraining from updating the periodic table prior to the discovery of the entire 8th period is not a terrible sacrifice to make in the name of preserving the table's visual aesthetics (provided data of new elements are recorded and catalogued in other ways).
 This is another [[:Category:Comics with red annotations|comic containing red annotations]] over a complex and established structure. It suggests changing the periodic table, which was also discussed in [[2214: Chemistry Nobel]].

@@ Line 14: / Line 14: @@
 The title text suggests discovering elements only in entire rows at once, a suggestion which is far more unreasonable than it appears on its surface. Elements with more protons than 118 could be discovered in future by collisions in particle accelerators, but as of right now, the chances of finding or synthesizing samples of such elements lasting longer than 10 quadrillionths (10<sup>−14</sup>) of a second is looking rather grim. Furthermore, the theoretical 8th period is expected to contain 49 elements, more than any row in the current 7-period table. Taking this all into account, discovering an entire row's worth of elements all at once is nothing short of a herculean undertaking, and its difficulty only grows in orders of magnitude for each successive row. With all that said, however, elements beyond 118 are unlikely to have practical applications in science and engineering due to their vanishingly short lifespan and may probably only ever serve as intellectual curiosities. Thus, refraining from updating the periodic table prior to the discovery of the entire 8th period is not a terrible sacrifice to make in the name of preserving the table's visual aesthetics (provided data of new elements are recorded and catalogued in other ways).
-This is another [[:Category:Comics with red corrections|comic containing red corrections]] over a complex and established structure. It suggests changing the periodic table, which was also discussed in [[2214: Chemistry Nobel]].
+This is another [[:Category:Comics with red annotations|comic containing red annotations]] over a complex and established structure. It suggests changing the periodic table, which was also discussed in [[2214: Chemistry Nobel]].
 ===Table of the proposed changes===