Pe̍h-kim (白金) sī chi̍t khoán kim-sio̍k lūi ê hoà-ha̍k goân-sò͘, kì-hō Pt, goân-chú-hoan 78.
Pe̍h-kim, 78Pt
 |
| Ki-pún sèng-chit |
|---|
| Miâ, hû-hō |
Pe̍h-kim, Pt |
|---|
| Eng-bûn |
platinum |
|---|
| Gōa-hêng |
silvery white |
|---|
| Pe̍h-kim tī chiu-kî-piáu lāi ê ūi-tì |
|---|
|
|
| Goân-chú-hoan |
78 |
|---|
| Goân-chú-liōng (±) |
195.084(9)[1] |
|---|
| Goân-sò͘ lūi-pia̍t |
kòe-tō͘ kim-sio̍k |
|---|
| Cho̍k, hun-khu |
10 cho̍k, d khu |
|---|
| Chiu-kî |
tē 6 chiu-kî |
|---|
| Tiān-chú pâi-lia̍t |
[Xe] 4f14 5d9 6s1 |
|---|
| per shell |
2, 8, 18, 32, 17, 1 |
|---|
| Bu̍t-lí sèng-chit |
|---|
| Siòng |
kò͘-thé |
|---|
| Iûⁿ-tiám |
2041.4 K (1768.3 °C, 3214.9 °F) |
|---|
| Hut-tiám |
4098 K (3825 °C, 6917 °F) |
|---|
| Bi̍t-tō͘ (sek-un) |
21.45 g·cm−3 |
|---|
|
19.77 g·cm−3 |
| Iûⁿ-hoà-jia̍t |
22.17 kJ·mol−1 |
|---|
| Cheng-hoat-jia̍t |
510 kJ·mol−1 |
|---|
| Jia̍t-iông-liōng |
25.86 J·mol−1·K−1 |
|---|
cheng-khì-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| tī T (K)
|
2330
|
(2550)
|
2815
|
3143
|
3556
|
4094
| |
| Goân-chú sèng-chit |
|---|
| Sng-hòa-sò͘ |
6, 5, 4, 3, 2, 1, −1, −2, −3 (a mildly basic oxide) |
|---|
| Tiān-hū-tō͘ |
Pauling scale: 2.28 |
|---|
| Tiān-lī-lêng |
1st: 870 kJ·mol−1
2nd: 1791 kJ·mol−1 |
|---|
| Goân-chú pòaⁿ-kèng |
empirical: 139 pm |
|---|
| Kiōng-kè pòaⁿ-kèng |
136±5 pm |
|---|
| Van der Waals pòaⁿ-kèng |
175 pm |
|---|
| Cha̍p-lio̍k |
|---|
| Chiⁿ-thé kò͘-chō |
face-centered cubic (fcc) |
|---|
| Siaⁿ-sok (sòe kùn-á) |
2800 m·s−1 (at r.t.) |
|---|
| Jia̍t-phòng-tiòng |
8.8 µm·m−1·K−1 (at 25 °C) |
|---|
| Jia̍t-thoân-tō-lu̍t |
71.6 W·m−1·K−1 |
|---|
| Tiān-chó͘-lu̍t |
105 nΩ·m (at 20 °C) |
|---|
| Chû-sèng |
paramagnetic |
|---|
| Kiông-tō͘ |
125–240 MPa |
|---|
| Young hē-sò͘ |
168 GPa |
|---|
| Shear hē-sò͘ |
61 GPa |
|---|
| Bulk hē-sò͘ |
230 GPa |
|---|
| Poisson pí |
0.38 |
|---|
| Mohs ngē-tō͘ |
3.5 |
|---|
| Vickers ngē-tō͘ |
400–550 MPa |
|---|
| Brinell ngē-tō͘ |
300–500 MPa |
|---|
| CAS teng-kì pian-hō |
7440-06-4 |
|---|
| Le̍k-sú |
|---|
| Hoat-hiān kap siōng chá ê tông-ūi-sò͘ |
Antonio de Ulloa (1735) |
|---|
| Chòe ún-tēng ê tông-ūi-sò͘ |
|---|
|
Chú bûn-chiong: Pe̍h-kim ê tông-ūi-sò͘ |
| 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 |
