Talk:Periodic table (detailed cells)

Old talk

The numbers whithin parenthesis; what do they mean? E.g. in the entry for hydrogen, it says "1.00794(7)". Does that mean there is 7 discovered isotopes, or is it the uncertainty in the number? \Mike(z) 13:37, 10 Apr 2005 (UTC)

It's the concise form of writing the uncertainty, giving only the corresponding last digits. http://physics.nist.gov/cgi-bin/cuu/Info/Constants/definitions.html As I understand it, 1.00794(7) means 1.00794 with one standard uncertainty of 0.00007, that is, the value can be expected with a confidence of 68% to be between 1.00794±0.00007 and with a confidence of 95% between 1.00794±0.00014. Femto 14:25, 11 Apr 2005 (UTC)

Also—all masses (except those in square brackets) usually don't refer to specific isotopes, but to the mean value for the natural isotopic composition, as standardized by the reference given at list of elements by atomic mass. Femto 15:04, 11 Apr 2005 (UTC)

Oh, I'm not sure. I THINK that it's the # of the most stable/common isotope, but otherwise you should listen to the members who posted earlier. They sound like they know what's going on ;) IceUnshattered (talk) 00:42, 9 January 2008 (UTC)

I think Femto's correct.

Reformatting

I just added a whole hunk of information from the smaller version, including natural occurrence. The table looks substantially different, because I originally used it for a chemistry class and placed it in straight HTML (me being deprived of a test wiki at the time), then coded it back. There're probably several regressions, because I used a version from August, so feel free to fix 'em. alerante ✆ 23:44, 11 October 2005 (UTC)

Good: Different text colours for solids, gases and liquids, and different frame styles for stable and radioactive elements. Possibly bad: I think the size of the table has grown beyond the two normal-size sheets of paper mentioned in the introduction. Any suggestions? As to regressions I'm not sure what you mean, but if errors were introduced with the reformatting I'm quite sure you'll find them before us. --Eddi (Talk) 03:27, 12 October 2005 (UTC)

By the way, all the repetitive formatting in this table really screams for templates. See for example the Norwegian version of this table, nn:Periodesystemet i stor utgåve, where the code for e.g. period 6 looks like this:

|-
! <big>[[Periode 6|6]]</big>
| {{Grunnstoff/Celle2 |55|Cesium    |Cs|132,90545(2) |Fast|Alkalimetall|Grunnelement}}
| {{Grunnstoff/Celle2 |56|Barium    |Ba|137,327(7)   |Fast|Jordalkalimetall|Grunnelement}}
| {{Grunnstoff/Celle  |57-71<br>*|Lantanid|          |Fast|Lantanid|Ukjent}}
| {{Grunnstoff/Celle2 |72|Hafnium   |Hf|178,49(2)    |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |73|Tantal    |Ta|180,9479(1)  |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |74|Wolfram   |W |183,84(1)    |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |75|Rhenium   |Re|186,207(1)   |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |76|Osmium    |Os|190,23(3)    |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |77|Iridium   |Ir|192,217(3)   |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |78|Platina   |Pt|195,078(2)   |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |79|Gull      |Au|196,96655(2) |Fast|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |80|Kvikksølv |Hg|200,59(2)    |Væske|Transisjonsmetall|Grunnelement}}
| {{Grunnstoff/Celle2 |81|Thallium  |Tl|204,3833(2)  |Fast|Metall|Grunnelement}}
| {{Grunnstoff/Celle2 |82|Bly       |Pb|207,2(1)     |Fast|Metall|Grunnelement}}
| {{Grunnstoff/Celle2 |83|Vismut    |Bi|208,98038(2) |Fast|Metall|Grunnelement}}
| {{Grunnstoff/Celle2 |84|Polonium  |Po|[210]        |Fast|Halvmetall|Naturleg_radio}}
| {{Grunnstoff/Celle2 |85|Astat     |At|[210]        |Fast|Halogen|Naturleg_radio}}
| {{Grunnstoff/Celle2 |86|Radon     |Rn|[220]        |Gass|Edelgass|Naturleg_radio}}
|-

The main template is nn:Template:Grunnstoff/Celle2. The last three arguments are state of matter, chemical series and stability, which govern text colour, background colour and frame style. Font size, line breaks etc. are in the template. Would anyone be interested in a more easily readable and editable table code? --Eddi (Talk) 03:27, 12 October 2005 (UTC)

Font size

Would anyone mind me shrinking the font size to about 50% and redirecting the detailed version into this one? æle ✆ 2006-06-07t20:40z

I'm not sure about font size, but I do believe that someone can slim down the size of the boxes themselves. I don't have the skill--but I'll look. Above, someone posted the norweigen version, which looks much better. And I don't mind redirecting the detailed version. They seem basically the same; the differences are negligible enough that I wouldn't care, and I doubt that anyone else would really mind your doing that. IceUnshattered (talk) 00:37, 9 January 2008 (UTC)

Accuracy

I changed the accuracy of the atomic masses to a maximum of 5 digits resp. 3 decimal digits. I think this more than suffices for an overview table. Also, the table becomes less wide and the boxes now have almost identical widthes as they should. For the same reason one might consider to remove the remaining inaccuracies given in the table.--Roentgenium111 (talk) 18:42, 12 May 2008 (UTC)

Printable Version

I have screen-captured this table as a printable file for my kids' use and would like to contribute it to Commons so anyone can use it. I know that this will be a snapshot and will not get updated as regularly as the live Wiki but the same is true of the Schools CD. Does anyone have a comment on this proposal? If not, I'll just go ahead. Mark Beard (talk) 12:32, 6 October 2008 (UTC)

Cp

Can someone please edit the note beneath the table and the table itself: http://www.webelements.com/ Element 112 is now officially known as copernicium. —Preceding unsigned comment added by 76.250.232.91 (talk) 22:33, 29 September 2009 (UTC)

The table at the webelements site is incorrect. First, the name "copernicium" will not be officially certified before January 2010. Second, the symbol "Cp" was previously used as a symbol for a proposed (but not certified) element name and has thus been disqualified. "Cn" has since been suggested as the symbol to be used when and if "copernicium" is officially certified. ---Glenn L (talk) 05:24, 30 September 2009 (UTC)

Copernicium

Isn't copernicium supposed to be a liquid at STP? —Preceding unsigned comment added by Wd930 (talk • contribs) 06:08, 7 December 2010 (UTC)

Please provide citation to verify this claim. DMacks (talk) 15:39, 10 December 2010 (UTC)

Atomic weights of some elements to be expressed as integrals

See this article. Affected elements include hydrogen, lithium, boron, carbon, nitrogen, oxygen, silicon, sulfur, chlorine and thallium, WTF? (talk) 17:37, 16 December 2010 (UTC)

Shouldn't the table be more like...

This is a large version of the periodic table and contains the symbol, atomic number, and mean atomic mass value for the natural isotopic composition of each element. The periodic table of the chemical elements is a tabular method of displaying the chemical elements. Although precursors to this table exist, its invention is generally credited to Russian chemist Dmitri Mendeleev in 1869. Mendeleev intended the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as new elements have been discovered, and new theoretical models have been developed to explain chemical behavior.

The periodic table is now ubiquitous within the academic discipline of chemistry, providing an extremely useful framework to classify, systematize and compare all the many different forms of chemical behavior. The table has also found wide application in physics, biology, engineering, and industry. The current standard table contains 118 confirmed elements as of 10 March 2010, through element 118.

Periodic Table

Group →	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
↓ Period	IA	IIA	IIIB	IVB	VB	VIB	VIIB	VIIIB	VIIIB	VIIIB	IB	IIB	IIIA	IVA	VA	VIA	VIIA	VIIIA
Template:Element cell-3	Name of element Atomic number Chemical symbol Relative atomic mass																Template:Element cell-3
Template:Element cell-3	Template:Element cell-3											Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3
Template:Element cell-3	Template:Element cell-3											Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3
Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3
Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3
Template:Element cell-3	Template:Element cell-3	Template:Element cell-2	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3
Template:Element cell-3	Template:Element cell-3	Template:Element cell-2	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3
* Lanthanides			Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3
** Actinides			Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3	Template:Element cell-3

Legend

State at Standard Temperature and Pressure (0°C and Earth´s Atmosphere Pressure) width="20%" style="text-align: center; color: Template:Element color/Gas;" | Gas width="20%" style="text-align: center; color: Template:Element color/Liquid;" | Liquid width="20%" style="text-align: center; color: Template:Element color/Solid;" | Solid width="50%" style="text-align: center; color: Template:Element color/UnknownPhase;" | Unknown

Natural Occurrence width="25%" style="text-align: center; border: Template:Element frame/Primordial;" | Primordial width="25%" style="text-align: center; border: Template:Element frame/Natural radio;" | Trace Radioisotope width="25%" style="text-align: center; border: Template:Element frame/Synthetic;" | Synthetic

References

• IUPAC periodic table (Retrieved 20 June 2005)
• WebElements Periodic table (professional edition) (Retrieved 20 June 2005)
• Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107-1122, 2003
• IUPAC Standard Atomic Weights Revised (2005).

Notes

ar:جدول دوري (ضخم) fr:Tableau périodique des éléments détaillé ms:Jadual berkala (terperinci) no:Periodesystemet i stor utgave nn:Periodesystemet i stor utgåve ro:Tabelul periodic al elementelor (lărgit) simple:Periodic table (big) sv:Periodiska systemet (stort) th:ตารางธาตุพร้อมชื่อและน้ำหนักอะตอมใหญ่ zh:扩展元素周期表