The spelling of the word "Sernas" follows the standard English pronunciation rules. It is pronounced as /ˈsɜrnəs/ with the stress on the first syllable. The letter "s" is pronounced as /s/ and the letter "e" as /ɜː/. The letter "r" is pronounced as /r/ and the letter "n" as /n/. Lastly, the letter "a" is pronounced as /ə/. Overall, the spelling of "Sernas" accurately reflects its pronunciation in English language.