heavy elements
type: Concept
preferred label: عناصر سنگین @fa
related: periodic table

atomic number
type: Concept
preferred label: عدد اتمی @fa
related: periodic table

descriptive inorganic chemistry
type: Concept
preferred label: شیمی معدنی توصیفی @fa
related: periodic table

period
type: Concept
preferred label: دوره @fa
related: periodic table

Mendeleyev table
type: Concept
preferred label: جدول مندلیوف @fa
related: periodic table

main groups
type: Concept
broader: periodic table
preferred label: گروه‌های اصلی @fa

subgroups
type: Concept
broader: periodic table
preferred label: گروه‌های فرعی @fa

periodic table
type: Concept
narrower: subgroups
narrower: main groups
preferred label: جدول تناوبی @fa
related: descriptive inorganic chemistry
related: period
related: heavy elements
related: chemical symbol
related: atomic number
related: Mendeleyev table

chemical symbol
type: Concept
preferred label: نشانه شیمیایی @fa
related: periodic table