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  2. Write down the electronic configuration of: Pm^3+
# NCERT

8.1     Write down the electronic configuration of:

              (ii)Pm^{3+}

Answers (1)
M manish

Atomic number of promethium is 61 and the nearest noble gas is xenon(Xe)
So, atomic configuration of Pm^{3+}=[Xe]^{54}4f^{4}

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