Original: Ununoctium ( ; officially , the two initial Us are to be pronounced ) , also known as eka-radon or element 118 , is the temporary IUPAC name for the transactinide element having the atomic number 118 and temporary element symbol Uuo .
Simplified: Ununoctium ( or ) , also known as eka-radon or element 118 , is the temporary IUPAC name for the transactinide element having the atomic number 118 and temporary element symbol Uuo .