… Hydrides, nitrides, azides, silicides and borides, whether or not …
Explanatory notes
… 28.50 ‑ Hydrides, nitrides, azides, silicides and borides, whether or not … one of which is described by the term used (hydrogen, nitrogen, silicon or boron), the others being non‑metals or … aluminium‑lithium), sodium, potassium, strontium, antimony, nickel, titanium, zirconium, tin, lead, etc. This heading …