Osmium,  ₇₆Os

ngoi-kôn
silvery, blue cast
Kî-pún sin-sit
Miàng, fù-ho	Osmium, Os
ngoi-hìn	silvery, blue cast
Osmium chhai chû-khì-péu ke vi-chi
Ru ↑ Os ↓ Hs rhenium ← Osmium → iridium
ngièn-chṳ́ sì-sú	76
ngièn-chṳ́-liòng (±)	190.23(3)[1]
ngièn-su lui-phe̍t	ko-thu kîm-su̍k
Chhu̍k, fûn-khî	8 chhu̍k, d-block
chû-khì	period 6
thien-chṳ́ phài-lie̍t	[Xe] 4f14 5d6 6s2
per shell	2, 8, 18, 32, 14, 2
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	3306 K ​(3033 °C, ​5491 °F)
pui-tiám	5285 K ​(5012 °C, ​9054 °F)
Me̍t-thu near Sit-vûn	22.59 g·cm−3
20 g·cm−3
Yùng-fa-ngie̍t	31 kJ·mol−1
Chîn-fat-ngie̍t	378 kJ·mol−1
Ngie̍t-yùng-liong	24.7 J·mol−1·K−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 3160 3423 3751 4148 4638 5256
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	8, 7, 6, 5, 4, 3, 2, 1, 0, −1, −2, −4 ​(a mildly acidic oxide)
Thien-fu-sin	Pauling scale: 2.2
Thien-lì-nèn	1st: 840 kJ·mol−1 2nd: 1600 kJ·mol−1
Ngièn-chṳ́ pan-kang	empirical: 135 pm
Khiung-ka pan-kang	144±4 pm
Miscellanea
Chîn-thí keu-chho	​hexagonal close-packed (hcp)
Sâng-suk thin rod	4940 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong	5.1 µm·m−1·K−1 (at 25 °C)
Ngie̍t-chhòn-thô-li̍t	87.6 W·m−1·K−1
Thien-chú-li̍t	81.2 nΩ·m (at 0 °C)
Chhṳ̀-sin	paramagnetic[2]
Shear modulus	222 GPa
Bulk modulus	462 GPa
Poisson ratio	0.25
Mohs hardness	7.0
Brinell hardness	3490–4000 MPa
CAS Registry Number	7440-04-2
Le̍k-sú
Hoat-kiàn kap siōng chá ê tông-ūi-sò͘	Smithson Tennant (1803)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Osmium ke thùng-vi-su
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

Osmium (Hon-ngî: 鋨 é) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Os, ngièn-chṳ́ su-muk he 76.