rhodium

| Introduction | History | Other Periodic Tables | Back |

Symbol:

Rh

Atomic Number:

45

Relative Atomic Mass:

102.90550 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

10^-7% (mass fraction)

Electron Configuration:

[Kr]4d⁸5s

Oxidation States:

V, IV, III, II, I, 0 

Atomic Radius:

134.5pm

Covalent Radius:

125pm

Ionic Radius:

55pm (for +5 oxidation state)

77pm (for +3 oxidation state)

Melting Point:

1966°C

Density:

12.41 g cm^-3 (at 20°C)

First Ionisation Energy:

7.46 eV

Reduction Potential:

0.758V

for Rh³⁺ + 3e^- a Rh_(s)

Electronegativity (Allred and Rochow):

1.5

Number of Natural Isotopes:

1

Mass Number of the Most Abundant Isotopes:

103 g mol^-1 a 100% abundance