PT of element importance in teaching (1992)

[Rene]

https://digital.sciencehistory.org/works/pg15bf812

It looks like—going by groups—the alkali and alkaline metals; and the halogen nonmetals get the most attention.

Among the rest of the nonmetals, CHONPS get a good profile with poor Se left in a hole. That leaves B-Si-Ge (with Ge in a hole)-As-Sb-Te; and the noble gases.

René