What will be the IUPAC nomenclature of the element placed just below the element At.
Atomic number of At = 85
A
Ununennium
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B
Ununseptium
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C
Ununoctium
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D
Ununhexium
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Solution
The correct option is B Ununseptium Astatine is a halogen having atomic number 85. The element placed below it would have atomic number 85+32=117.
Thus the correct nomenclature would be Ununseptium with symbol Uus.