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JEE Advanced levelSingle correct optionDifficulty 3 of 3pt022

An element was given the temporary IUPAC systematic name ununhexium on the basis of its atomic number, before its permanent name was approved. Its atomic number and group in the long form table are

  1. AZ = 116, group 16
  2. BZ = 166, group 16
  3. CZ = 116, group 6
  4. DZ = 106, group 16

Answer: A

The roots are un = 1, un = 1, hex = 6, so Z = 116. Z = 118 is the noble gas of period 7, so element 116 is two places before it: , group 16 (p-block, period 7).
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