46Pd106.42
Palladium
Transition Metal
Solid at STP
Period 5Group 10Block DDiscovered 1803
[Kr]4d10
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.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 46 |
| Atomic Mass | 106.42 u |
| Electron Configuration | [Kr]4d10 |
| Oxidation States | +3, +2 |
| Electronegativity | 2.2 (Pauling) |
| Atomic Radius | 202 pm |
| Ionization Energy | 8.337 eV |
| Electron Affinity | 0.557 eV |
| Block | D |
Physical Properties
| Appearance | silvery white |
| Standard State | Solid |
| Melting Point | 1828.05 K (1554.9 °C) |
| Boiling Point | 3236 K (2962.8 °C) |
| Density | 12 g/cm³ |
| Molar Heat | 25.98 J/(mol·K) |
| CPK Color | #6985 |
Classification
| Category | Transition Metal |
| Group Block | Transition metal |
| Period | 5 |
| Group | 10 |
| Block | D |
Discovery
| Year Discovered | 1803 |
| Discovered By | William Hyde Wollaston |
| Electron Shells | 2, 8, 18, 18 |