In chemistry, periodic table (TR:122) (LH:31) (TL:153) grouping of the 118+ elements, 92 of which naturally occur, 26 of which comprise humans, in into a table ordered by rows, where each row has a distinct valence shell size, and columns, each column ordered by increasing electron count in the valence shell.
The following are related quotes:
- “I saw in a dream a table where all the elements fell into place as required.”
- Strathern, Paul. (2000). Mendeleyev’s Dream: the Quest for the Elements (pgs. 286-87). Berkeley Books.
- Periodic table – Hmolpedia 2020.