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Atomic number of promethium is 61 and the nearest noble gas is xenon(
)![Pm^{3+}=[Xe]^{54}4f^{4}](https://entrancecorner.codecogs.com/gif.latex?Pm%5E%7B3+%7D%3D%5BXe%5D%5E%7B54%7D4f%5E%7B4%7D)
So, atomic configuration of