Latin-derived nouns ending in -um change to -a in the plural form.
Sodium is regular. It follows the Latin -a rule.
Use plural verbs: "The sodia are ready" (not "is ready").
Yes. The plural sodia is standard across all English variants.
The word sodium follows the standard English pluralization rule. When forming the plural, sodium becomes sodia. This follows the Latin -a pattern, which is one of the most common plural rules in English.
Understanding why sodium becomes sodia helps with spelling and pronunciation. Latin-derived nouns ending in -um change to -a in the plural form.
When using sodia in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The sodia are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.