Wikipedia:WikiProject Elements/PTG/categories/2018

Summary of changes from 2013

 * Deprecate "polyatomic nonmetal" and "diatomic nonmetal" categories in favor of unifying "reactive nonmetal" category
 * Cn is now classfied as "unknown chemical properties"

Contrasts





 * }

Color Blindness (CB)

 * Using coblis

(more later)

Element color 2018



 * SoM



Analysis & issues

 * todo