Pha̍k-kîm, 78Pt| ngoi-kôn |
|---|
silvery white
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Pha̍k-kîm, Pt |
|---|
| Yîn-ngî |
platinum |
|---|
| ngoi-hìn |
silvery white |
|---|
| Pha̍k-kîm chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
78 |
|---|
| ngièn-chṳ́-liòng (±) |
195.084(9)[1] |
|---|
| ngièn-su lui-phe̍t |
ko-thu kîm-su̍k |
|---|
| Chhu̍k, fûn-khî |
10 chhu̍k, d-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 4f14 5d9 6s1 |
|---|
| per shell |
2, 8, 18, 32, 17, 1 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
2041.4 K (1768.3 °C, 3214.9 °F) |
|---|
| pui-tiám |
4098 K (3825 °C, 6917 °F) |
|---|
| Me̍t-thu near Sit-vûn |
21.45 g·cm−3 |
|---|
|
19.77 g·cm−3 |
| Yùng-fa-ngie̍t |
22.17 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
510 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
25.86 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| chhai T (K) |
2330 |
(2550) |
2815 |
3143 |
3556 |
4094 |
|
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
6, 5, 4, 3, 2, 1, −1, −2, −3 (a mildly basic oxide) |
|---|
| Thien-fu-sin |
Pauling scale: 2.28 |
|---|
| Thien-lì-nèn |
1st: 870 kJ·mol−1
2nd: 1791 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 139 pm |
|---|
| Khiung-ka pan-kang |
136±5 pm |
|---|
| Van der Waals pan-kang |
175 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
face-centered cubic (fcc) |
|---|
| Sâng-suk thin rod |
2800 m·s−1 (at r.t.) |
|---|
| Ngie̍t-phàng-chong |
8.8 µm·m−1·K−1 (at 25 °C) |
|---|
| Ngie̍t-chhòn-thô-li̍t |
71.6 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
105 nΩ·m (at 20 °C) |
|---|
| Chhṳ̀-sin |
paramagnetic |
|---|
| Tensile strength |
125–240 MPa |
|---|
| Young's modulus |
168 GPa |
|---|
| Shear modulus |
61 GPa |
|---|
| Bulk modulus |
230 GPa |
|---|
| Poisson ratio |
0.38 |
|---|
| Mohs hardness |
3.5 |
|---|
| Vickers hardness |
400–550 MPa |
|---|
| Brinell hardness |
300–500 MPa |
|---|
| CAS Registry Number |
7440-06-4 |
|---|
| Le̍k-sú |
|---|
| Hoat-kiàn kap siōng chá ê tông-ūi-sò͘ |
Antonio de Ulloa (1735) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Pha̍k-kîm ke thùng-vi-su |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
| 190Pt |
0.014% |
6.5×1011 y |
α |
3.252 |
186Os |
| 192Pt |
0.782% |
>4.7×1016 y |
(α) |
2.4181 |
188Os |
| 193Pt |
syn |
50 y |
ε |
– |
193Ir |
| 194Pt |
32.967% |
– |
(α) |
1.5045 |
190Os |
| 195Pt |
33.832% |
– |
(α) |
1.1581 |
191Os |
| 196Pt |
25.242% |
– |
(α) |
0.7942 |
192Os |
| 198Pt |
7.163% |
>3.2×1014 y |
(α) |
0.0870 |
194Os |
| (β−β−) |
1.0472 |
198Hg |
|
|
Decay modes in parentheses are predicted, but have not yet been observed |
Pha̍k-kîm (白金) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Pt, ngièn-chṳ́ su-muk he 78.
