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Wikipedia:WikiProject Elements/PTG/categories/2021a

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{{Periodic table legend}}

Summary of changes from 2020

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  • ?

Color set

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Blind PT

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Contrasts

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Hex neighborhood

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File:Periodic table graphics (2021a) - 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 2021a

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  • 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

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todo