46106.42PdPalladium
Palladium (Pd) — element 46transition metal · group 10, period 5
Palladium is a chemical element with the symbol Pd and atomic number 46. It is a transition metal in group 10, period 5 of the periodic table (the d-block), with a standard atomic mass of 106.42 u. At room temperature (25 °C) palladium is a solid.
💡 Known for: A key metal in catalytic converters, also used in electronics, dentistry and hydrogen purification.
# Palladium properties
| Symbol | Pd |
|---|---|
| Atomic number | 46 |
| Atomic mass | 106.42 u |
| Category | transition metal |
| Group | 10 |
| Period | 5 |
| Block | d-block |
| Electron configuration | [Kr] 4d¹⁰ |
| Full configuration | 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ |
| Electrons per shell | 2, 8, 18, 18 |
| Protons / electrons | 46 / 46 |
| State at 25 °C | solid |
| Melting point | 1828.05 K (1554.9 °C, 2830.8 °F) |
| Boiling point | 3236 K (2962.8 °C, 5365.1 °F) |
| Density | 12.02 g/cm³ |
| Electronegativity (Pauling) | 2.2 |
| First ionization energy | 8.337 eV |
| Atomic radius | 169 pm |
| Discovered | 1803 |
# Electron configuration of palladium
The electron configuration of palladium is [Kr] 4d¹⁰, written out in full as 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰. Its 46 electrons fill 4 shells as 2, 8, 18, 18, so the outermost shell holds 18 electrons.
# Related elements
RhRhodiumprevious elementAgSilvernext elementNiNickelgroup 10PtPlatinumgroup 10DsDarmstadtiumgroup 10ScScandiumtransition metalTiTitaniumtransition metalVVanadiumtransition metalCrChromiumtransition metalMnManganesetransition metalFeIrontransition metalCoCobalttransition metalCuCoppertransition metal
# Palladium FAQ
What is the atomic number of palladium?
The atomic number of palladium is 46: every palladium atom has 46 protons in its nucleus. Its symbol is Pd.
What is the atomic mass of palladium?
The standard atomic mass of palladium is 106.42 u.
What is the electron configuration of palladium?
Palladium's electron configuration is [Kr] 4d¹⁰ (1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰), with 2, 8, 18, 18 electrons per shell.
Is palladium a metal?
Yes. Palladium is a transition metal, one of the metals.
What is the melting point of palladium?
Palladium melts at 1828.05 K (1554.9 °C, 2830.8 °F) and boils at 3236 K (2962.8 °C, 5365.1 °F).
What is palladium used for / known for?
A key metal in catalytic converters, also used in electronics, dentistry and hydrogen purification.