from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any element of group 16 of the periodic table - oxygen, sulphur, selenium, tellurium and polonium.
From chalco- (“ore”) + -gen (“forming”). (Wiktionary)
The terms pnictogen and chalcogen are dear to my heart, yet they are just pretentious ways of saying nitrogen family and oxygen family.
This is a silver-doped chalcogenide (chalcogen is Te).