periodic system of element
preferred label: سامانه تناوبی عناصر @fa
type: Concept
related: element (chemical)

atom
preferred label: اتم @fa
type: Concept
related: element (chemical)

element (chemical)
alternative label: chemical element
scope note: for specific metal and non-metal see appropriate chemical names
related: periodic system of element
related: element relative abundance
related: atom
preferred label: عنصر (شیمیایی) @fa
type: Concept

element relative abundance
preferred label: فراوانی نسبی عنصر @fa
type: Concept
related: element (chemical)