Element of oxygen family

...A general term for the five elements in group VI (group VIB) of the periodic table: oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po). Also called the oxygen family. Since polonium is radioactive and oxygen has properties quite different from other elements, the remaining three elements are sometimes called the sulfur family.

*Some of the terminology that refers to "element of oxygen family" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…周期表周期表第VI族(第VIB族)に属する，酸素O，硫黄S，セレンSe，テルルTe，ポロニウムPoの5元素の総称。酸素族元素element of oxygen familyともいう。ポロニウムは放射性であり，また酸素は他の元素と性質がかなり異なるので，これらを除く3元素，硫黄族元素element of sulfur familyを呼ぶこともある。…

※「element of oxygen family」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報