Why is it die Passivität?

Passivität ends in -ität, and nouns ending in -ität are feminine: in a German dictionary, 100% of them take die.

All nouns ending in -ität
Sense 1
die

Meaning

[1] The condition of passive to being not executing actions

[1] der Zustand, passiv zu sein; das Nichtausführen von Handlungen

Examples

[1]

[1]

Declension

1 Singular Plural
Nominativ die Passivität —
Genitiv der Passivität —
Dativ der Passivität —
Akkusativ die Passivität —

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary