Pha̍k-kîm (白金) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Pt, ngièn-chṳ́ su-muk he 78.
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 |
