The elements with atomic numbers 101 and 104 belong to. respectively
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a
Actinoids and Group 4
b
Group 11 and Group 4
c
Group 6 and Actinoids
d
Actinoids and Group 6
answer is A.
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Detailed Solution
89AC⟶103LrBelongs to actinoids series and they all belongs to 3rd' group. So atomic no. 101 element is actinoids and atomic number 104 element belongs to 4thgroup.