Talk:Periodic table (large version)

From Wikipedia, the free encyclopedia

	Chemistry Portal This article is supported by the Elements WikiProject, which gives a central approach to the chemical elements on Wikipedia. Please participate by editing this article, or visit the project page for more details. This article has also been selected for the Version 0.5 release of Wikipedia.
FA	This article has been rated as FA-Class on the quality scale.
Mid	This article has been rated as Mid-importance on the importance scale.
Article Grading: The article has been rated for quality and/or importance but has no comments yet. If appropriate, please review the article and then leave comments here to identify the strengths and weaknesses of the article and what work it will need.

Periodic table (large version) is included in the 2006 Wikipedia CD Selection, or is a candidate for inclusion in the next version. Please maintain high quality standards and, if possible, stick to GFDL-compatible images.

Periodic table (large version) is a featured list, which means it has been identified as one of the best lists produced by the Wikipedia community. If you see a way this page can be updated or improved without compromising previous work, feel free to contribute.

This article has been selected for Version 0.5 and the next release version of Wikipedia. This Natsci article has been rated FA-Class on the assessment scale.

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)

[edit] 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)

[edit] 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