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

The elements with atomic numbers 101 and 104 belong to, respectively:
  1. Group 11 and Group 4
  2. Actinoids and Group 6
  3. Actinoids and Group 4
  4. Group 6 and Actinoids

Solution

89Ac→103Lr

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

Asked in: JEE Main 2020 (04 Sep Shift 1)

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