46 Pd 106.421

Palladium

TRANSITION METAL

Phase: Solid

Discovered: William Hyde Wollaston

Block: D

Summary

Palladium is a chemical element with symbol Pd and atomic number 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas.

Appearance: silvery white

Source: Wikipedia

Physical Properties

Atomic Mass 106.421 u

Density 12.023 g/cm³

Melting Point 1828.05 K

Boiling Point 3236 K

Molar Heat 25.98 J/(mol·K)

Electron Affinity 54.24 kJ/mol

Ionization Energies

1^st: 804.4 kJ/mol

2^nd: 1870 kJ/mol

3^rd: 3177 kJ/mol