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JEE Main20204 Sep 2020Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

The elements with atomic numbers 101 and 104 belong to, respectively:

Options

  1. AGroup 11 and Group 4
  2. BActinoids and Group 6
  3. CActinoids and Group 4
  4. DGroup 6 and Actinoids

Correct answer

C. Actinoids and Group 4

Step-by-step solution

89 Ac → 103 Lr Belongs to actinoids series and they all belongs to 3 rd group. So atomic n o. 101 element is actinoids and atomic number 104 element belongs to 4 th group.

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