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Question
Chemistry
The radioactive lanthanide is
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Q. The radioactive lanthanide is
The d-and f-Block Elements
A
ytterbium $\left(Yb\right)$
24%
B
iron $\left(Fe\right)$
0%
C
promethium $\left(Pm\right)$
76%
D
copper$\left(Cu\right)$
0%
Solution:
Promethium is synthetic and radioactive element