… Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than …
Explanatory notes
… 28.50 ‑ Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than … described by the term used (hydrogen, nitrogen, silicon or boron), the others being non‑metals or metals. (A) HYDRIDES … also hydrides of arsenic, silicon, boron (including sodium borohydride), lithium (and aluminium‑lithium), sodium, …