Rhodium

Rh 3d5/2 binding energy values [1].

Rh 3d XPS spectrum of sputter cleaned rhodium metal.

Peakshape from metal standard in figure above is LA(1.2,3,2). FWHMs are 0.51 eV (3d5/2) and 0.79 eV (3d3/2) at 10 eV pass energy and 0.56 eV (3d5/2) and 0.82 eV (3d3/2) at 20 eV pass energy. Note some broadening of 3d3/2 peak versus 3d5/2 peak due to Coster-Kronig effect.

Rh 3d5/2-3d3/2 splitting is 4.71 eV [2].
Rh 3p3/2: 497 eV
Rh 3p1/2: 512 eV
Rh 3s: 629 eV
Rh 4p: 48 eV
Rh 4s: 81 eV

References:
[1] C.D. Wagner, A.V. Naumkin, A. Kraut-Vass, J.W. Allison, C.J. Powell, J.R.Jr. Rumble, NIST
Standard Reference Database 20, Version 3.4 (web version) (http:/srdata.nist.gov/xps/) 2003.
[2] J.F. Moulder, W.F. Stickle, P.E. Sobol, K.D. Bomben, Handbook of X-ray Photoelectron Spectroscopy, Perkin-Elmer Corp., Eden Prairie, MN, 1992.