Europium, 63Eu| ngoi-kôn |
|---|
silvery white, with a pale yellow tint;[1] but rarely seen without oxide discoloration
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Europium, Eu |
|---|
| ngoi-hìn |
silvery white, with a pale yellow tint;[2] but rarely seen without oxide discoloration |
|---|
| Europium chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
63 |
|---|
| ngièn-chṳ́-liòng (±) |
151.964(1)[3] |
|---|
| ngièn-su lui-phe̍t |
lanthanum-hi |
|---|
| Chhu̍k, fûn-khî |
n/a, f-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 4f7 6s2 |
|---|
| per shell |
2, 8, 18, 25, 8, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
1099 K (826 °C, 1519 °F) |
|---|
| pui-tiám |
1802 K (1529 °C, 2784 °F) |
|---|
| Me̍t-thu near Sit-vûn |
5.264 g·cm−3 |
|---|
|
5.13 g·cm−3 |
| Yùng-fa-ngie̍t |
9.21 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
176 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
27.66 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| chhai T (K) |
863 |
957 |
1072 |
1234 |
1452 |
1796 |
|
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
3, 2, 1 (a mildly basic oxide) |
|---|
| Thien-fu-sin |
Pauling scale: 1.2 |
|---|
| Thien-lì-nèn |
1st: 547.1 kJ·mol−1
2nd: 1085 kJ·mol−1
3rd: 2404 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 180 pm |
|---|
| Khiung-ka pan-kang |
198±6 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
body-centered cubic (bcc) |
|---|
| Ngie̍t-phàng-chong |
poly: 35.0 µm·m−1·K−1 (at r.t.) |
|---|
| Ngie̍t-chhòn-thô-li̍t |
est. 13.9 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
poly: 0.900 µΩ·m (at r.t.) |
|---|
| Chhṳ̀-sin |
paramagnetic[4] |
|---|
| Young's modulus |
18.2 GPa |
|---|
| Shear modulus |
7.9 GPa |
|---|
| Bulk modulus |
8.3 GPa |
|---|
| Poisson ratio |
0.152 |
|---|
| Vickers hardness |
165–200 MPa |
|---|
| CAS Registry Number |
7440-53-1 |
|---|
| Le̍k-sú |
|---|
| Hí-miàng |
after Europe |
|---|
| Hoat-kiàn kap siōng chá ê tông-ūi-sò͘ |
Eugène-Anatole Demarçay (1896, 1901) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Europium ke thùng-vi-su |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
| 150Eu |
syn |
36.9 y |
ε |
2.261 |
150Sm |
| 151Eu |
47.8% |
5×1018 y |
α |
1.9644 |
147Pm |
| 152Eu |
syn |
13.54 y |
ε |
1.874 |
152Sm |
| β− |
1.819 |
152Gd |
| 153Eu |
52.2% |
– |
(α) |
0.2736 |
149Pm |
| 154Eu |
syn |
8.59 y |
β− |
1.969 |
154Gd |
| 155Eu |
syn |
4.76 y |
β− |
0.253 |
155Gd |
|
|
Decay modes in parentheses are predicted, but have not yet been observed |
Europium (Hon-ngî: 銪 yǒu) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Eu, ngièn-chṳ́ su-muk he 63.
