noun
nitrogen group; group 15 elements
Technical term in chemistry referring to the elements in group 15 of the periodic table: nitrogen, phosphorus, arsenic, antimony, bismuth, and moscovium.
窒素族元素には窒素やリンが含まれる。
The nitrogen group includes nitrogen and phosphorus.
窒素 is the element nitrogen itself, while 窒素族元素 refers to the entire group of elements in the same column of the periodic table.
Compound of 窒素 (nitrogen) + 族 (group/family) + 元素 (element). The term is a direct calque from Western chemistry nomenclature.