- #1

unscientific

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## Homework Statement

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I'm supposed to find the quantum numbers (n, L, J) for the first 3 energy levels in Iridium (Z=77), given that the first 4 ionization energies are ##76.1, 13.4, 12.8, 11.2 keV##.

## Homework Equations

## The Attempt at a Solution

I know that the electronic configuration is ##[Xe] 4f^{14} 5d^7 6s^2##.

I suppose lowest level is ##n=6, l=0, S=0,J=0##.

Is the next level ##6s^1 6p^1##?