Atomic Properties
- Atomic Number
- 64
- Atomic Mass
- 157.2500 u
- Electron Configuration
- [Xe] 4f7 5d1 6s2
- Electronegativity
- 1.20
- Block
- f-block
- Group
- —
- Period
- 6
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1585.00 K
- Boiling Point
- 3273.00 K
- Density
- 7.9000 g/cm³
About Gadolinium
Highly magnetic; used as MRI contrast agent and in nuclear reactors.
Isotopes of Gadolinium
Gadolinium has 7 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 152Gd | 152 | 151.9197995 | 0.2000% | Stable |
| 154Gd | 154 | 153.9208741 | 2.180% | Stable |
| 155Gd | 155 | 154.9226305 | 14.80% | Stable |
| 156Gd | 156 | 155.9221312 | 20.47% | Stable |
| 157Gd | 157 | 156.9239686 | 15.65% | Stable |
| 158Gd | 158 | 157.9241123 | 24.84% | Stable |
| 160Gd | 160 | 159.9270624 | 21.86% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)