Question : The IUPAC name of an element is Ununennium. What is the symbol?
Option 1: Une
Option 2: Unl
Option 3: Unm
Option 4: Unu
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Correct Answer: Une
Solution : The correct answer is Une .
Roentgenium is known by its IUPAC name, Ununennium. The element Roentgenium is a radioactive isotope that is naturally unstable.
IUPAC Nomenclature notation
- 1: un
- 9: enn
Therefore, it is written as "ium" after the three notations for the three digits.
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