Neodymium (Nd) – element 60
Neodymium is a chemical element with the symbol Nd and atomic number 60. It is a lanthanide in group 3 (lanthanides), period 6 of the periodic table (f-block), and is a solid at room temperature.
Neodymium (Nd) has atomic number 60, atomic mass 144.24 u and electron configuration [Xe] 4f4 6s2.
Neodymium facts
| Symbol | Nd |
|---|---|
| Atomic number | 60 |
| Atomic mass | 144.24 u (g/mol) |
| Category | lanthanide |
| Group | group 3 (lanthanides) |
| Period | 6 |
| Block | f-block |
| Phase at 20 °C | Solid |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f4 |
| Noble-gas notation | [Xe] 4f4 6s2 |
| Electrons per shell | 2, 8, 18, 22, 8, 2 |
Bohr model and shells
Neodymium has 60 electrons in 6 shells: 2, 8, 18, 22, 8, 2. Full configuration and noble-gas notation are in the table; work out any element or ion with the electron configuration calculator.
Physical and atomic properties
| Melting point | 1297 K (1023.9 °C) |
|---|---|
| Boiling point | 3347 K (3073.8 °C) |
| Density | 7.01 g/cm³ |
| Electronegativity (Pauling) | 1.14 |
| Electron affinity | 184.87 kJ/mol |
| Ionization energies | 533.1, 1040, 2130 kJ/mol (1st, 2nd, 3rd) |
| Molar heat capacity | 27.45 J/(mol·K) |
| Discovered by | Carl Auer von Welsbach |
Use the atomic mass in the molar mass calculator for any formula containing Nd.
Position in the periodic table
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Frequently asked questions
What is the atomic mass of neodymium?
The atomic mass of neodymium is 144.24 u, so one mole of neodymium atoms weighs 144.24 g.
What is the electron configuration of neodymium?
Neodymium has 60 electrons: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f⁴, or [Xe] 4f⁴ 6s² in noble-gas notation. Electrons per shell: 2, 8, 18, 22, 8, 2.
Is neodymium a metal?
Yes. Neodymium is a lanthanide.
Where is neodymium on the periodic table?
Neodymium is in group 3 (lanthanides), period 6, in the f-block.
Data: Periodic-Table-JSON (CC BY-SA 3.0); standard atomic weights from IUPAC (abridged). Values in brackets are the mass number of the longest-lived isotope.