Thorium, 90Thngoi-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 |
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ngièn-chṳ́-liòng (±) |
232.0377(4)[1] |
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ngièn-su lui-phe̍t |
actinium-hi |
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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) |
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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 |
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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 |
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Thien-fu-sin |
Pauling scale: 1.3 |
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Thien-lì-nèn |
1st: 587 kJ·mol−1 2nd: 1110 kJ·mol−1 3rd: 1930 kJ·mol−1 |
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Ngièn-chṳ́ pan-kang |
empirical: 179.8 pm |
---|
Khiung-ka pan-kang |
206±6 pm |
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Miscellanea |
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Chîn-thí keu-chho |
face-centered cubic (fcc) |
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Sâng-suk thin rod |
2490 m·s−1 (at 20 °C) |
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Ngie̍t-phàng-chong |
11.0 µm·m−1·K−1 (at 25 °C) |
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Ngie̍t-chhòn-thô-li̍t |
54.0 W·m−1·K−1 |
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Thien-chú-li̍t |
157 nΩ·m (at 0 °C) |
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Chhṳ̀-sin |
paramagnetic[2] |
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Young's modulus |
79 GPa |
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Shear modulus |
31 GPa |
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Bulk modulus |
54 GPa |
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Poisson ratio |
0.27 |
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Mohs hardness |
3.0 |
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Vickers hardness |
295–685 MPa |
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Brinell hardness |
390–1500 MPa |
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CAS Registry Number |
7440-29-1 |
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Le̍k-sú |
---|
Hí-miàng |
after Thor, the Norse god of thunder |
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Fat-hien |
Jöns Jakob Berzelius (1829) |
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Chui vún-thin ke thùng-vi-su |
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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.