Terbium, 65Tbngoi-kôn |
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silvery white
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Terbium-2.jpg/250px-Terbium-2.jpg) |
Kî-pún sin-sit |
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Miàng, fù-ho |
Terbium, Tb |
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ngoi-hìn |
silvery white |
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Terbium chhai chû-khì-péu ke vi-chi |
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ngièn-chṳ́ sì-sú |
65 |
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ngièn-chṳ́-liòng (±) |
158.92535(2)[1] |
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ngièn-su lui-phe̍t |
lanthanum-hi |
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Chhu̍k, fûn-khî |
n/a, f-block |
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chû-khì |
period 6 |
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thien-chṳ́ phài-lie̍t |
[Xe] 4f9 6s2 |
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per shell |
2, 8, 18, 27, 8, 2 |
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vu̍t-lî sin-chṳt |
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Siông |
ku-thí |
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yùng-tiám |
1629 K (1356 °C, 2473 °F) |
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pui-tiám |
3396 K (3123 °C, 5653 °F) |
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Me̍t-thu near Sit-vûn |
8.23 g·cm−3 |
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7.65 g·cm−3 |
Yùng-fa-ngie̍t |
10.15 kJ·mol−1 |
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Chîn-fat-ngie̍t |
391 kJ·mol−1 |
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Ngie̍t-yùng-liong |
28.91 J·mol−1·K−1 |
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chîn-hi-ap
P (Pa)
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1
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10
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100
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1 k
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10 k
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100 k
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chhai T (K)
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1789
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1979
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(2201)
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(2505)
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(2913)
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(3491)
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Ngièn-chṳ́ sin-chṳt |
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Yông-fa-su |
4, 3, 2, 1 (a weakly basic oxide) |
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Thien-fu-sin |
Pauling scale: 1.2 (?) |
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Thien-lì-nèn |
1st: 565.8 kJ·mol−1 2nd: 1110 kJ·mol−1 3rd: 2114 kJ·mol−1 |
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Ngièn-chṳ́ pan-kang |
empirical: 177 pm |
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Khiung-ka pan-kang |
194±5 pm |
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Miscellanea |
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Chîn-thí keu-chho |
hexagonal close-packed (hcp) |
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Sâng-suk thin rod |
2620 m·s−1 (at 20 °C) |
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Ngie̍t-phàng-chong |
at r.t. α, poly: 10.3 µm·m−1·K−1 |
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Ngie̍t-chhòn-thô-li̍t |
11.1 W·m−1·K−1 |
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Thien-chú-li̍t |
α, poly: 1.150 µΩ·m (at r.t.) |
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Chhṳ̀-sin |
paramagnetic at 300 K |
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Young's modulus |
α form: 55.7 GPa |
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Shear modulus |
α form: 22.1 GPa |
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Bulk modulus |
α form: 38.7 GPa |
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Poisson ratio |
α form: 0.261 |
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Vickers hardness |
450–865 MPa |
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Brinell hardness |
675–1200 MPa |
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CAS Registry Number |
7440-27-9 |
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Le̍k-sú |
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Hí-miàng |
after Ytterby (Sweden), where it was mined |
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Hoat-kiàn kap siōng chá ê tông-ūi-sò͘ |
Carl Gustaf Mosander (1842) |
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Chui vún-thin ke thùng-vi-su |
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Chú vùn-chông: Terbium ke thùng-vi-su |
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Decay modes in parentheses are predicted, but have not yet been observed |
Terbium (Hon-ngî: 鋱 tè) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Tb, ngièn-chṳ́ su-muk he 65.