Wikipedia talk:WikiProject Elements/PTG

PTG (talk)
Periodic Table Graphics

Themes
(the sciences)
WT:ELEM

Graphics
(the presentations)

Blocks
(BLOCK) (talk)

State of Matter
(SOM) (talk)

Micro-PT
(MICRO) (talk)

Metal-Nonmetal
(M-nonM) (talk)

Resources
(sets, more)

• Central talkpage for PTG

Blocks

Since we are now using blocks in the miniature PTs, I'll provide a palette that preserves hue but meets AAA guidelines:

Caption text

Block	Current	Proposed	Contrast against WL
s	ff9999	ffe3e3	7.045
g	fd99ff	fee0ff	7.034
f	9bff99	daffd9	7.833
d	99ccff	d8ebff	7.004
p	fdff8c	feffbf	8.232

Also, I believe the current scheme was adopted in 2014. –LaundryPizza03 (dc̄) 05:51, 25 January 2021 (UTC)

The lighter colors are more difficult to tell apart from each other, though. And some of the colors are indistinguishable (f and p; g and d) in both the current and proposed sets for colorblind readers. I think it's possible to satisfy a lower threshold (contrast of 3 or 4.5) to account for colorblindness and contrast between adjacent hues (so the boundaries between blocks are more prominent). ComplexRational (talk) 17:47, 25 January 2021 (UTC)

Agree, hard to distinguish. What I described as § Recognition and distinction. Will try some more. -DePiep (talk) 17:56, 25 January 2021 (UTC)

Created set "LP03-blocks1" and section. (This WP:PTG page setup is a bit clumsy, needs improvement. Until then, I will jump in ;-) .) -DePiep (talk) 18:17, 25 January 2021 (UTC)

re ComplexRational I have this argument to allow lesser-than-AAA contrast:

The texts are in a tabular form, with names & symbols & numbers showing in regular places, in regular format, and in a fixed (relative to cell) place. Recognition of these letters & numbers is way more easy for the human eye.

I am not sure how w3c would weigh this though. -DePiep (talk) 20:42, 25 January 2021 (UTC)

Okay, if we, then only the s-block and g-block will need lightening, to an AA-compliant minimum of   #ffb3b3 and   #ffa9ff. I wonder if WP:COLOR should be revised with regards to structured bgcolor. –LaundryPizza03 (dc̄) 21:10, 25 January 2021 (UTC)

I'm playing around with other colors. In HSL, we can change S, L that's two variables. Also, I think: maybe lighter ones are good overall, because block colors are not the one-and-only feature of the PT, so some reduced flashlighting might be OK. Even stronger: blocks are already there in any black/white PT: it's in the structure! So coloring blocks is not needed. Distracts from principal coluns & rows even. -DePiep (talk) 21:32, 25 January 2021 (UTC)

But they're not completely in the structure because of helium, right? Double sharp (talk) 05:41, 8 March 2021 (UTC)

I've build a set, demo/test here. -DePiep (talk) 11:06, 26 January 2021 (UTC)

Okay, but note that most sources use red, yellow, green, and blue for the four currently known blocks. That's why the current scheme was adopted. –LaundryPizza03 (dc̄) 02:10, 26 January 2021 (UTC)

By 'other colors' I meant same Hue, different S, L. ;-) -DePiep (talk) 11:22, 26 January 2021 (UTC)

Extended periodic table

Several templates used in Extended periodic table to represent the layout of period 8 have been replaced by images, and now the formats are all different.

• Aufbau: Template:Extended periodic table (by Aufbau, 50 columns, period 8): Period 8 only. Colors used are the same as in the main PT.
• Pyykkö 2011: File:Pyykko periodic table 172.svg (replaced Template:Extended periodic table (by Pyykkö, 50 columns, periods 8–9)). Transparent SVG image with unfilled cells; has annotated lists of subshells. The atomic numbers 139 and 140 are colored red, but otherwise the diagram is entirely black and white. A version for the Fricke 1975 layout also exists at Commons.
• Fricke 1975: File:Fricke periodic table 172.png (replaced Template:Extended periodic table (by Fricke, 52 columns, periods 8–9)). Tall and skinny listing atomic numbers in their positions, plus shading representing the number and type of valence electrons. Brought to FfD here due to questionable licensing.
• Nefedov 2006; Kulsha 2011, 2016: File:Pt172.png and File:Pt172expanded.png (no preexisting template). Colored by block, but somewhat differently from main PT. Needs to be converted to SVG. A template Template:Extended periodic table (by Nefedov, 54 columns, compact cells) exists, but unlike the others it includes the known periods 1–7 as well.

Relevant TfD: Wikipedia:Templates_for_discussion/Log/2021_March_7#Template:Extended_periodic_table_(by_Pyykkö,_50_columns,_periods_8–9). –LaundryPizza03 (dc̄) 20:34, 7 March 2021 (UTC)

I can replace the Fricke image with a Wikitable (sacrificing the subshell fillings, where Fricke et al.'s calculations are not agreed on among all researchers). I am not really happy with colouring in Fricke and Pyykkö by blocks because they did not do it by themselves, but at least it's clear from their papers how it'd work. I do think, that the first 7 periods are necessary because they both follow different group 3 principles from us.

BTW Nefedov et al.'s paper contains a fragmentary short PT (the old Russian style with 8 columns) up to 164 only. Also, Rg is disaligned to reflect that its configuration does not match Au (rather a pointless distinction if you ask me, but it's in the source). That also I think needs showing. Double sharp (talk) 05:46, 8 March 2021 (UTC)

@LaundryPizza03: OK, replaced Fricke picture with a Wikitable. And added Nefedov's picture. Double sharp (talk) 06:18, 8 March 2021 (UTC)

Dark mode

With the rollout of the new dark mode, the periodic table's colors will need to be adjusted so that they display clearly in dark mode while preserving the dark-mode aesthetic. In particular, the p-block is barely legible because it inverts to near-black. –LaundryPizza03 (dc̄) 23:49, 4 August 2024 (UTC)