Instantanety or Instantaneity: How To spell?

The word Instantanety is misspelled against Instantaneity, a noun meaning "Quality of being instantaneous."

Word contains consecutive vowels 'EI' in between alphabets instantan & ty is misspelled as 'E' as letter 'I' is phonetically ig
Wrong Spelling:  instantan-e-ty 
Correct Spelling:  instantan-ei-ty 
Explore spell check of Instantaneity to spell without errors.