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NEET levelSingle correct optionDifficulty 1 of 3pt014

Using the IUPAC rules for temporary systematic names (used before a permanent name is approved), the element with atomic number 105 would be called

  1. Aunnilpentium
  2. Bunnilquadium
  3. Cunnilhexium
  4. Dunniloctium

Answer: A

The roots are nil = 0, un = 1, pent = 5. Z = 105 gives un-nil-pent plus the suffix -ium, i.e. unnilpentium.
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