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Pe̍h-kim, 78Pt![](//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Platinum_crystals.jpg/220px-Platinum_crystals.jpg) |
Ki-pún sèng-chit |
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Miâ, hû-hō | Pe̍h-kim, Pt |
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Eng-bûn | platinum |
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Gōa-hêng | silvery white |
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Pe̍h-kim tī chiu-kî-piáu lāi ê ūi-tì |
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Goân-chú-hoan | 78 |
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Goân-chú-liōng (±) | 195.084(9)[1] |
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Goân-sò͘ lūi-pia̍t | kòe-tō͘ kim-sio̍k |
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Cho̍k, hun-khu | 10 cho̍k, d khu |
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Chiu-kî | tē 6 chiu-kî |
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Tiān-chú pâi-lia̍t | [Xe] 4f14 5d9 6s1 |
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per shell | 2, 8, 18, 32, 17, 1 |
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Bu̍t-lí sèng-chit |
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Siòng | kò͘-thé |
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Iûⁿ-tiám | 2041.4 K (1768.3 °C, 3214.9 °F) |
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Hut-tiám | 4098 K (3825 °C, 6917 °F) |
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Bi̍t-tō͘ (sek-un) | 21.45 g·cm−3 |
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19.77 g·cm−3 |
Iûⁿ-hoà-jia̍t | 22.17 kJ·mol−1 |
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Cheng-hoat-jia̍t | 510 kJ·mol−1 |
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Jia̍t-iông-liōng | 25.86 J·mol−1·K−1 |
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cheng-khì-apP (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k | tī T (K) | 2330 | (2550) | 2815 | 3143 | 3556 | 4094 |
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Goân-chú sèng-chit |
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Sng-hòa-sò͘ | 6, 5, 4, 3, 2, 1, −1, −2, −3 (a mildly basic oxide) |
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Tiān-hū-tō͘ | Pauling scale: 2.28 |
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Tiān-lī-lêng | 1st: 870 kJ·mol−1 2nd: 1791 kJ·mol−1 |
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Goân-chú pòaⁿ-kèng | empirical: 139 pm |
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Kiōng-kè pòaⁿ-kèng | 136±5 pm |
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Van der Waals pòaⁿ-kèng | 175 pm |
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Cha̍p-lio̍k |
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Chiⁿ-thé kò͘-chō | face-centered cubic (fcc) |
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Siaⁿ-sok (sòe kùn-á) | 2800 m·s−1 (at r.t.) |
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Jia̍t-phòng-tiòng | 8.8 µm·m−1·K−1 (at 25 °C) |
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Jia̍t-thoân-tō-lu̍t | 71.6 W·m−1·K−1 |
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Tiān-chó͘-lu̍t | 105 nΩ·m (at 20 °C) |
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Chû-sèng | paramagnetic |
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Kiông-tō͘ | 125–240 MPa |
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Young hē-sò͘ | 168 GPa |
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Shear hē-sò͘ | 61 GPa |
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Bulk hē-sò͘ | 230 GPa |
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Poisson pí | 0.38 |
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Mohs ngē-tō͘ | 3.5 |
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Vickers ngē-tō͘ | 400–550 MPa |
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Brinell ngē-tō͘ | 300–500 MPa |
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CAS teng-kì pian-hō | 7440-06-4 |
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Le̍k-sú |
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Hoat-hiān kap siōng chá ê tông-ūi-sò͘ | Antonio de Ulloa (1735) |
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Chòe ún-tēng ê tông-ūi-sò͘ |
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Chú bûn-chiong: Pe̍h-kim ê tông-ūi-sò͘ |
iso | NA | half-life | DM | DE (MeV) | DP |
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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 |
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Decay modes in parentheses are predicted, but have not yet been observed |
Pe̍h-kim (白金) sī chi̍t khoán kim-sio̍k lūi ê hoà-ha̍k goân-sò͘, kì-hō Pt, goân-chú-hoan 78.