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MHT-CET PCB 03 — MHT - CET STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMHT - CETMHT-CET PCB 031 Mark
MCQ
The observed electronic configuration of promethium (atomic number 61) is ____________.
  • A
    $[\mathrm{Xe}] 4 \mathrm{f}^7 5 \mathrm{d}^1 6 \mathrm{~s}^2$
  • B
    [Xe] $4f^6 6s^2$
  • ✓
    [Xe] $4f^5 6s^2$
  • D
    $[\mathrm{Xe}] 4f^7 6s^2$
✓

Answer

Correct option: C.
[Xe] $4f^5 6s^2$
C

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