Why is it das Barium?

Barium ends in -ium, and nouns ending in -ium are neuter: in a German dictionary, 100% of them take das.

All nouns ending in -ium
Sense 1
das

Meaning

[1] Chemistry: Chemical element with the order number 56, which belongs to the group of earth -alkalimetals

[1] Chemie: chemisches Element mit der Ordnungszahl 56, das zur Gruppe der Erdalkalimetalle gehört

Examples

[1] Barium and all of its soluble connections are poisonous

[1] Barium und alle seine löslichen Verbindungen sind giftig.

[1] "Barium does not come elementary because of its high reactivity in nature, but only in connections"

[1] „Barium kommt wegen seiner hohen Reaktivität in der Natur nicht elementar, sondern nur in Verbindungen vor.“

Declension

1 Singular Plural
Nominativ das Barium —
Genitiv des Bariums —
Dativ dem Barium —
Akkusativ das Barium —

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary