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Europium, 63Eu
 |
| Ki-pún sèng-chit |
| Miâ, hû-hō |
europium, Eu |
| Gōa-hêng |
silvery white, with a pale yellow tint;[1] but rarely seen without oxide discoloration |
| Europium tī chiu-kî-piáu lāi ê ūi-tì |
|
|
| Goân-chú-hoan |
63 |
| Goân-chú-liōng (±) |
151.964(1)[2] |
| Goân-sò͘ lūi-pia̍t |
lanthanum-hē |
| Cho̍k, hun-khu |
n/a, f khu |
| Chiu-kî |
tē 6 chiu-kî |
| Tiān-chú pâi-lia̍t |
[Xe] 4f7 6s2 |
| per shell |
2, 8, 18, 25, 8, 2 |
| Bu̍t-lí sèng-chit |
| Siòng |
solid |
| Iûⁿ-tiám |
1099 K (826 °C, 1519 °F) |
| Hut-tiám |
1802 K (1529 °C, 2784 °F) |
| Bi̍t-tō͘ (sek-un) |
5.264 g·cm−3 |
| 5.13 g·cm−3 |
| Iûⁿ-hoà-jia̍t |
9.21 kJ·mol−1 |
| Cheng-hoat-jia̍t |
176 kJ·mol−1 |
| Jia̍t-iông-liōng |
27.66 J·mol−1·K−1 |
cheng-khì-ap
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| tī T (K) |
863 |
957 |
1072 |
1234 |
1452 |
1796 |
|
| Goân-chú sèng-chit |
| Sng-hòa-sò͘ |
3, 2, 1 (a mildly basic oxide) |
| Tiān-hū-tō͘ |
Pauling scale: 1.2 |
| Tiān-lī-lêng |
1st: 547.1 kJ·mol−1
2nd: 1085 kJ·mol−1
3rd: 2404 kJ·mol−1 |
| Goân-chú pòaⁿ-kèng |
empirical: 180 pm |
| Kiōng-kè pòaⁿ-kèng |
198±6 pm |
| Cha̍p-lio̍k |
| Chiⁿ-thé kò͘-chō |
body-centered cubic (bcc)
|
| Jia̍t-phòng-tiòng |
poly: 35.0 µm·m−1·K−1 (at r.t.) |
| Jia̍t-thoân-tō-lu̍t |
est. 13.9 W·m−1·K−1 |
| Tiān-chó͘-lu̍t |
poly: 0.900 µΩ·m (at r.t.) |
| Chû-sèng |
paramagnetic[3] |
| Young hē-sò͘ |
18.2 GPa |
| Shear hē-sò͘ |
7.9 GPa |
| Bulk hē-sò͘ |
8.3 GPa |
| Poisson pí |
0.152 |
| Vickers ngē-tō͘ |
165–200 MPa |
| CAS teng-kì pian-hō |
7440-53-1 |
| Le̍k-sú |
| Hō-miâ |
after Europe |
| Hoat-hiān kap siōng chá ê tông-ūi-sò͘ |
Eugène-Anatole Demarçay (1896, 1901) |
| Chòe ún-tēng ê tông-ūi-sò͘ |
| Chú bûn-chiong: europium ê tông-ūi-sò͘ |
| 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 sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 63, hoà-ha̍k hû-hō sī Eu.
- ↑ Pang-bô͘:Greenwood&Earnshaw
- ↑ Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
- ↑ Lide, D. R., pian. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th pán.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
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