Osmium

Osmium (Óa-im: "o-sú-mi-ùm") sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 76, hoà-ha̍k hû-hō sī Os.

Osmium,  ₇₆Os

Ki-pún sèng-chit
Miâ, hû-hō	osmium, Os
Gōa-hêng	silvery, blue cast
Osmium tī chiu-kî-piáu lāi ê ūi-tì
Ru ↑ Os ↓ Hs rhenium ← osmium → iridium
Goân-chú-hoan	76
Goân-chú-liōng (±)	190.23(3)[1]
Goân-sò͘ lūi-pia̍t	kòe-tō͘ kim-sio̍k
Cho̍k, hun-khu	8 cho̍k, d khu
Chiu-kî	tē 6 chiu-kî
Tiān-chú pâi-lia̍t	[Xe] 4f14 5d6 6s2
per shell	2, 8, 18, 32, 14, 2
Bu̍t-lí sèng-chit
Siòng	solid
Iûⁿ-tiám	3306 K ​(3033 °C, ​5491 °F)
Hut-tiám	5285 K ​(5012 °C, ​9054 °F)
Bi̍t-tō͘  (sek-un)	22.59 g·cm−3
20 g·cm−3
Iûⁿ-hoà-jia̍t	31 kJ·mol−1
Cheng-hoat-jia̍t	378 kJ·mol−1
Jia̍t-iông-liōng	24.7 J·mol−1·K−1
cheng-khì-ap P (Pa) 1 10 100 1 k 10 k 100 k tī T (K) 3160 3423 3751 4148 4638 5256
Goân-chú sèng-chit
Sng-hòa-sò͘	8, 7, 6, 5, 4, 3, 2, 1, 0, −1, −2, −4 ​(a mildly acidic oxide)
Tiān-hū-tō͘	Pauling scale: 2.2
Tiān-lī-lêng	1st: 840 kJ·mol−1 2nd: 1600 kJ·mol−1
Goân-chú pòaⁿ-kèng	empirical: 135 pm
Kiōng-kè pòaⁿ-kèng	144±4 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	​hexagonal close-packed (hcp)
Siaⁿ-sok (sòe kùn-á)	4940 m·s−1 (at 20 °C)
Jia̍t-phòng-tiòng	5.1 µm·m−1·K−1 (at 25 °C)
Jia̍t-thoân-tō-lu̍t	87.6 W·m−1·K−1
Tiān-chó͘-lu̍t	81.2 nΩ·m (at 0 °C)
Chû-sèng	paramagnetic[2]
Shear hē-sò͘	222 GPa
Bulk hē-sò͘	462 GPa
Poisson pí	0.25
Mohs ngē-tō͘	7.0
Brinell ngē-tō͘	3490–4000 MPa
CAS teng-kì pian-hō	7440-04-2
Le̍k-sú
Hoat-hiān kap siōng chá ê tông-ūi-sò͘	Smithson Tennant (1803)
Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: osmium ê tông-ūi-sò͘
iso NA half-life DM DE (MeV) DP 184Os 0.02% >5.6×1013 y (β+β+) 1.451 184W (α) 2.963 180W 185Os syn 93.6 d ε 1.013 185Re 186Os 1.59% 2.0×1015 y α 2.822 182W 187Os 1.96% – (α) 2.7202 183W 188Os 13.24% – (α) 2.1426 184W 189Os 16.15% – (α) 1.9757 185W 190Os 26.26% – (α) 1.3784 186W 191Os syn 15.4 d β− 0.314 191Ir 192Os 40.78% >9.8×1012 y (β−β−) 0.4135 192Pt (α) 0.3622 188W 193Os syn 30.11 d β− 1.141 193Ir 194Os syn 6 y β− 0.097 194Ir
Decay modes in parentheses are predicted, but have not yet been observed