palladium

| Introduction | History | Other Periodic Tables | Back |

Symbol:

Pd

Atomic Number:

46

Relative Atomic Mass:

106.42 g mol^-1

Natural Abundance in Lithosphere, hydrosphere and atmosphere:

10^-6% (mass fraction)

Electron Configuration:

[Kr]4d¹⁰

Oxidation States:

IV, II, 0

Atomic Radius:

137.6pm

Covalent Radius:

128pm

Ionic Radius:

64pm (for +2 oxidation state, 4 coordinate)

86pm (for +2 oxidation state, 6 coordinate)

Melting Point:

1554°C

Density:

12.41 g cm^-3 (at 20°C)

First Ionisation Energy:

8.34 eV

Reduction Potential:

0.951V

for Pd²⁺ + 2e^- a Pd_(s)

Electronegativity (Allred and Rochow):

1.4

Number of Natural Isotopes:

6

Mass Number of the Most Abundant Isotopes:

105 g mol^-1 a 22.3% abundance

106 g mol^-1 a 27.3% abundance

108 g mol^-1 a 26.5% abundance