Thorium, 90Th| ngoi-kôn |
|---|
silvery, often with black tarnish
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Thorium, Th |
|---|
| ngoi-hìn |
silvery, often with black tarnish |
|---|
| Thorium chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
90 |
|---|
| ngièn-chṳ́-liòng (±) |
232.0377(4)[1] |
|---|
| ngièn-su lui-phe̍t |
actinium-hi |
|---|
| Chhu̍k, fûn-khî |
n/a, f-block |
|---|
| chû-khì |
period 7 |
|---|
| thien-chṳ́ phài-lie̍t |
[Rn] 6d2 7s2 |
|---|
| per shell |
2, 8, 18, 32, 18, 10, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
2023 K (1750 °C, 3182 °F) |
|---|
| pui-tiám |
5061 K (4788 °C, 8650 °F) |
|---|
| Me̍t-thu near Sit-vûn |
11.724 g·cm−3 |
|---|
| Yùng-fa-ngie̍t |
13.81 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
514 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
26.230 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| chhai T (K)
|
2633
|
2907
|
3248
|
3683
|
4259
|
5055
| |
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
4, 3, 2, 1 |
|---|
| Thien-fu-sin |
Pauling scale: 1.3 |
|---|
| Thien-lì-nèn |
1st: 587 kJ·mol−1
2nd: 1110 kJ·mol−1
3rd: 1930 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 179.8 pm |
|---|
| Khiung-ka pan-kang |
206±6 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
face-centered cubic (fcc) |
|---|
| Sâng-suk thin rod |
2490 m·s−1 (at 20 °C) |
|---|
| Ngie̍t-phàng-chong |
11.0 µm·m−1·K−1 (at 25 °C) |
|---|
| Ngie̍t-chhòn-thô-li̍t |
54.0 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
157 nΩ·m (at 0 °C) |
|---|
| Chhṳ̀-sin |
paramagnetic[2] |
|---|
| Young's modulus |
79 GPa |
|---|
| Shear modulus |
31 GPa |
|---|
| Bulk modulus |
54 GPa |
|---|
| Poisson ratio |
0.27 |
|---|
| Mohs hardness |
3.0 |
|---|
| Vickers hardness |
295–685 MPa |
|---|
| Brinell hardness |
390–1500 MPa |
|---|
| CAS Registry Number |
7440-29-1 |
|---|
| Le̍k-sú |
|---|
| Hí-miàng |
after Thor, the Norse god of thunder |
|---|
| Fat-hien |
Jöns Jakob Berzelius (1829) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Thorium ke thùng-vi-su |
| iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
| 227Th
|
trace
|
18.68 d
|
α
|
6.038
5.978
|
223Ra
|
| 228Th
|
trace
|
1.9116 y
|
α
|
5.520
|
224Ra
|
| 229Th
|
trace
|
7917 y
|
α
|
5.168
|
225Ra
|
| 230Th
|
trace
|
75400 y
|
α
|
4.770
|
226Ra
|
| 231Th
|
trace
|
25.5 h
|
β−
|
0.39
|
231Pa
|
| 232Th
|
100%
|
1.405×1010 y
|
α
|
4.083
|
228Ra
|
| 234Th
|
trace
|
24.1 d
|
β−
|
0.27
|
234Pa
| |
Thorium (Hon-ngî: 釷 tǔ) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Th, ngièn-chṳ́ su-muk he 90.
