Wikipedia:WikiProject Elements/PTG/categories/2021c

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)

• All PTG/categories pages
• 2020
• 2018
• 2020a
• 2021a
• dewiki
• eswiki
• demo
• WT:PTG

PT-legend

Recognised themes are:

• Category
• Category compact
• State of matter
• Occurrence
• Janet category compact
• Block
• Valence
• Goldschmidt
• Age of discovery
• Metal–nonmetal (note: use ndash)

(All names are case-insensitive: A=a)

Summary of changes from 2020

• ?

Hex neighborhood

File:Periodic table graphics (2021c) - bordering colors check (hexagonals).svg

category	number of borders
AM	2
AEM	4
LN	3
AN	3
TM	4
PTM	3
MOID	3
ONONM	3
X	4
NG	1
(AM in LeftStep)	3
(ONONM in LeftStep)	4
(NG in LeftStep)	3

Element color 2021c

• Alkali metals → ?
• Alkaline earth metals → ?
• Lanthanides → ?
• Actinide → ?
• Transition metal → ?
• Post-transition metal → ?
• Metalloid → ?
• Other nonmetal → ?
• Halogen → ?
• Noble gas → ?
• Unknown chemical properties → ?

SoM

• solid → ?
• liquid → ?
• gas → ?
• phase unknown → ?

Analysis & issues

todo