Sodium wani sinadari ne mai alamar Na da lambar atomic lamba 11. Karfe ne mai laushi, mai laushi-fari, mai saurin amsawa wanda ke cikin rukunin alkali karfen abubuwa. A cikin tsaftataccen tsari, ba a samun sodium a cikin yanayi saboda yawan sake kunnawa da ruwa da iska. Ana yawan samunsa a cikin mahadi irin su sodium chloride (gishiri na tebur), sodium hydroxide (caustic soda), da sodium carbonate (soda ash).Kalmar “sodium” tana iya komawa ga nau’in ionized. kashi, Na, wanda shine muhimmin electrolyte a cikin tsarin halitta. Sodium ions suna taka muhimmiyar rawa a matakai daban-daban na physiological, ciki har da watsa motsin jijiyoyi, raunin tsoka, da kiyaye ma'aunin ruwa a cikin jiki. , kuma yana da mahimmancin ion da ke shiga cikin matakai masu yawa na nazarin halittu.