Stems for Compounds of Nonmetallic Elements

I III IV V VI VII
hydr- bor- carb- nitr- ox- fluor-
    silic- phosph- sulf- chlor-
      arsen- selen- brom-
        tellur- iod-

   

Stems for Ternary Acid Compounds of Nonmetallic Elements

I III IV V VI VII
  bor- carbon- nitr- ox-  
    silic- phosphor- sulfur- chlor-
      arsen- selen- brom-
        tellur- iod-