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Q.

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

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a

Actinoids and Group 6

b

Group 11 and Group 4

c

Group 6 and Actinoids

d

Actinoids and Group 4

answer is A.

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Detailed Solution

Element with atomic number, 101 is Mendelevium (Md). It is a transuranium element in the actinide series.

Element with atomic number, 104 is Rutherfordium and it belongs to group 4. 

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