Knockout NEET May 2021 (One Month)
An exhaustive E-learning program for the complete preparation of NEET..
₹ 14000/-
₹ 6999/-
Buy Now
Atomic number of promethium is 61 and the nearest noble gas is xenon(
)![Pm^{3+}=[Xe]^{54}4f^{4}](https://learn.careers360.com/latex-image/?Pm%5E%7B3+%7D%3D%5BXe%5D%5E%7B54%7D4f%5E%7B4%7D)
So, atomic configuration of