chalcogen
type: Concept
preferred label: کالکوژن @fa
related: tellurium
related: sulfur
related: oxygen

oxygen
type: Concept
preferred label: اکسیژن @fa
related: chalcogen

sulfur
type: Concept
preferred label: گوگرد @fa
related: chalcogen

tellurium
type: Concept
preferred label: تلور @fa
related: chalcogen