Samarium (Hon-ngî: 釤 shān) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Sm, ngièn-chṳ́ su-muk he 62.
Samarium, 62Sm| ngoi-kôn |
|---|
silvery white
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Samarium, Sm |
|---|
| thùng-su-thí |
α form |
|---|
| ngoi-hìn |
silvery white |
|---|
| Samarium chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
62 |
|---|
| ngièn-chṳ́-liòng (±) |
150.36(2)[1] |
|---|
| ngièn-su lui-phe̍t |
lanthanum-hi |
|---|
| Chhu̍k, fûn-khî |
n/a, f-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 4f6 6s2 |
|---|
| per shell |
2, 8, 18, 24, 8, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
1345 K (1072 °C, 1962 °F) |
|---|
| pui-tiám |
2173 K (1900 °C, 3452 °F) |
|---|
| Me̍t-thu near Sit-vûn |
7.52 g·cm−3 |
|---|
|
7.16 g·cm−3 |
| Yùng-fa-ngie̍t |
8.62 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
192 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
29.54 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| chhai T (K)
|
1001
|
1106
|
1240
|
(1421)
|
(1675)
|
(2061)
| |
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
4, 3, 2, 1 (a mildly basic oxide) |
|---|
| Thien-fu-sin |
Pauling scale: 1.17 |
|---|
| Thien-lì-nèn |
1st: 544.5 kJ·mol−1
2nd: 1070 kJ·mol−1
3rd: 2260 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 180 pm |
|---|
| Khiung-ka pan-kang |
198±8 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
rhombohedral |
|---|
| Sâng-suk thin rod |
2130 m·s−1 (at 20 °C) |
|---|
| Ngie̍t-phàng-chong |
(r.t.) (α, poly) 12.7 µm·m−1·K−1 |
|---|
| Ngie̍t-chhòn-thô-li̍t |
13.3 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
(r.t.) (α, poly) 0.940 µΩ·m |
|---|
| Chhṳ̀-sin |
paramagnetic[2] |
|---|
| Young's modulus |
α form: 49.7 GPa |
|---|
| Shear modulus |
α form: 19.5 GPa |
|---|
| Bulk modulus |
α form: 37.8 GPa |
|---|
| Poisson ratio |
α form: 0.274 |
|---|
| Vickers hardness |
410–440 MPa |
|---|
| Brinell hardness |
440–600 MPa |
|---|
| CAS Registry Number |
7440-19-9 |
|---|
| Le̍k-sú |
|---|
| Hí-miàng |
after the mineral samarskite (itself named after Vasili Samarsky-Bykhovets) |
|---|
| Hoat-kiàn kap siōng chá ê tông-ūi-sò͘ |
Lecoq de Boisbaudran (1879) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Samarium ke thùng-vi-su |
| iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
| 144Sm
|
3.07%
|
–
|
(β+β+)
|
1.7811
|
144Nd
|
| (α)
|
0.0761
|
140Nd
|
| 145Sm
|
syn
|
340 d
|
ε
|
–
|
145Pm
|
| 146Sm
|
trace
|
1.03×108 y
|
α
|
2.529
|
142Nd
|
| 147Sm
|
14.99%
|
1.06×1011 y
|
α
|
2.310
|
143Nd
|
| 148Sm
|
11.24%
|
7×1015 y
|
α
|
1.986
|
144Nd
|
| 149Sm
|
13.82%
|
>2×1015 y
|
(α)
|
1.870
|
145Nd
|
| 150Sm
|
7.38%
|
–
|
(α)
|
1.4495
|
146Nd
|
| 151Sm
|
syn
|
90 y
|
β−
|
–
|
151Eu
|
| 152Sm
|
26.75%
|
–
|
(α)
|
0.2203
|
148Nd
|
| 153Sm
|
syn
|
46.284 h
|
β−
|
–
|
153Eu
|
| 154Sm
|
22.75%
|
>2.3×1018 y
|
(β−β−)
|
1.2510
|
154Gd
| |
|
Decay modes in parentheses are predicted, but have not yet been observed |
