Pe̍h-kim

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
Pd ↑ Pt ↓ Ds iridium ← Pe̍h-kim → kim
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