The elements of group 15 of the periodic table, i.e. nitrogen (N), arsenic (As), antimony (Sb), and bismuth (Bi). The elements As, Sb, and Bi form a range of solid-state ternary compounds with interesting electrical and magnetic properties. Examples are LaSiP3, K6Bi2Sn23, and Yb14MnSb11. Compounds of this type are known as pnictides.