Gadolinium, 64Gd|
silvery white
 |
|
| Miàng, fù-ho | Gadolinium, Gd |
|---|
| ngoi-hìn | silvery white |
|---|
|
|
| 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 |
|---|
|
| 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 |
|
|
| 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 |
|---|
|
| 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 |
|---|
|
| 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) |
|---|
|
| 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 |
Gadolinium (Hon-ngî: 釓 gá) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Gd, ngièn-chṳ́ su-muk he 64.
