MCQ
The elements with atomic numbers $101$ and $104$ belong to, respectively
- AGroup $11$ and Group $4$
- ✓Actinoids and Group $4$
- CActinoids and Group $6$
- DGroup $6$ and Actinoids
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Rate constant of reaction $K = 1 0^{-2}\ min^{-1}$ Which is correct statement ? $(\ln\, 2 = 0. 7)$
(At nos. : $L a=57, C e=58, E u=63$ and $Y b=70$ )
