Boron forms a range of compounds with elements that are less electronegative than itself, called borides. Borides such as ZrB2 and TiB2 are hard refractory substances, which are chemically inert and have remarkably high electrical conductivities. Borides have a wide range of stoichiometries, from M4B through to MB6, and can exist in close-packed arrays, chains, and two-dimensional nets. Natural boron consists of two isotopes, 10B (18.83%) and 11B (81.17%). These percentages are sufficiently high for their detection by splitting of infrared absorption or by n.m.r. spectroscopy. Both borax and boric acid are used as mild antiseptics and are not regarded as toxic; boron hydrides are however highly toxic. KUNEMPI engingayazi ukuthi iyolanyulwa wubani phakathi kwabazalwe ngeminyaka ka-2000 nabeka-1980. Zaze zalufela ubala izingane ezincane ezinkundleni zokuxhumana, zingenzanga lutho. Endaweni yesibili yiyona nto yebhokisi lokuthutha inja. Zivame ukwenziwa ngo: Ukuze exemple ithegi lastBuildDate iba lastbuilddate. Njengoba nje i ukuvimbela i-plugin zonke eza emuva “evamile”