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JEE Main levelSingle correct optionDifficulty 2 of 3pt008

Using the IUPAC rules for the temporary systematic naming of elements (applied before a permanent name is approved), the element with atomic number 109 would be named and symbolised as

  1. Aunnilennium, Une
  2. Bununennium, Uue
  3. Cunniloctium, Uno
  4. Dunnilseptium, Uns

Answer: A

The digit roots are 1 = un, 0 = nil, 9 = enn, so 109 is un-nil-enn-ium with symbol Une. Ununennium would be 119, unniloctium 108 and unnilseptium 107.
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