| ngoi-kôn |
|---|
silvery white
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Gadolinium, Gd |
|---|
| ngoi-hìn |
silvery white |
|---|
| Gadolinium chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
64 |
|---|
| ngièn-chṳ́-liòng (±) |
157.25(3)[1] |
|---|
| ngièn-su lui-phe̍t |
lanthanum-hi |
|---|
| Chhu̍k, fûn-khî |
n/a, f-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 4f7 5d1 6s2 |
|---|
| per shell |
2, 8, 18, 25, 9, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
1585 K (1312 °C, 2394 °F) |
|---|
| pui-tiám |
3273 K (3000 °C, 5432 °F) |
|---|
| Me̍t-thu near Sit-vûn |
7.90 g·cm−3 |
|---|
|
7.4 g·cm−3 |
| Yùng-fa-ngie̍t |
10.05 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
301.3 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
37.03 J·mol−1·K−1 |
|---|
chîn-hi-ap (calculated)
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
| | chhai T (K)
|
1836
|
2028
|
2267
|
2573
|
2976
|
3535
|
|
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
1, 2, 3 (a mildly basic oxide) |
|---|
| Thien-fu-sin |
Pauling scale: 1.20 |
|---|
| Thien-lì-nèn |
1st: 593.4 kJ·mol−1
2nd: 1170 kJ·mol−1
3rd: 1990 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 180 pm |
|---|
| Khiung-ka pan-kang |
196±6 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
hexagonal close-packed (hcp) |
|---|
| Sâng-suk thin rod |
2680 m·s−1 (at 20 °C) |
|---|
| Ngie̍t-phàng-chong |
α poly: 9.4 µm·m−1·K−1 (at 100 °C) |
|---|
| Ngie̍t-chhòn-thô-li̍t |
10.6 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
α, poly: 1.310 µΩ·m |
|---|
| Chhṳ̀-sin |
ferromagnetic-paramagnetic transition at 293.4 K |
|---|
| Young's modulus |
α form: 54.8 GPa |
|---|
| Shear modulus |
α form: 21.8 GPa |
|---|
| Bulk modulus |
α form: 37.9 GPa |
|---|
| Poisson ratio |
α form: 0.259 |
|---|
| Vickers hardness |
510–950 MPa |
|---|
| CAS Registry Number |
7440-54-2 |
|---|
| Le̍k-sú |
|---|
| Hí-miàng |
after the mineral Gadolinite (itself named after Johan Gadolin) |
|---|
| Fat-hien |
Jean Charles Galissard de Marignac (1880) |
|---|
| First isolation |
Lecoq de Boisbaudran (1886) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Gadolinium ke thùng-vi-su |
| iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
|---|
| 152Gd
|
0.20%
|
1.08×1014 y
|
α
|
2.205
|
148Sm
| | 154Gd
|
2.18%
|
–
|
(α)
|
0.0812
|
150Sm
| | 155Gd
|
14.80%
|
–
|
(α)
|
0.0812
|
151Sm
| | 156Gd
|
20.47%
|
–
|
(SF)
|
<71.541
|
| | 157Gd
|
15.65%
|
–
|
(SF)
|
<70.531
|
| | 158Gd
|
24.84%
|
–
|
(SF)
|
<70.965
|
| | 160Gd
|
21.86%
|
>1.3×1021 y
|
(β−β−)
|
1.729
|
160Dy
|
|
|
Decay modes in parentheses are predicted, but have not yet been observed |
