Periodic Table
45
Rh
102.91
Rhodium
Transition MetalCatalytic converters; config exception (4d⁸5s¹).
Electronic Configuration
[Kr] 4d⁸ 5s¹or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 4d⁸ 5s¹
Electron shells
2e⁻n=1
8e⁻n=2
18e⁻n=3
16e⁻n=4
1e⁻n=5
Properties
Atomic number
45
Atomic mass
102.91 u
Category
Transition Metal
Block / Group / Period
d · 9 · 5
Valence electrons
1
Oxidation states
+3
Electronegativity
2.28
Atomic radius
173 pm
Ionization energy
720 kJ/mol
Electron affinity
110 kJ/mol
Melting point
2237 K / 1964 °C
Boiling point
3968 K / 3695 °C
Density
12.41 g/cm³
State at 25 °C
solid
Personal Notes
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