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Iridium,  ₇₇Ir

ngoi-kôn
silvery white
Kî-pún sin-sit
Miàng, fù-ho	Iridium, Ir
ngoi-hìn	silvery white
Iridium chhai chû-khì-péu ke vi-chi
Rh ↑ Ir ↓ Mt osmium ← Iridium → pha̍k-kîm
ngièn-chṳ́ sì-sú	77
ngièn-chṳ́-liòng (±)	192.217(3)[1]
ngièn-su lui-phe̍t	ko-thu kîm-su̍k
Chhu̍k, fûn-khî	9 chhu̍k, d-block
chû-khì	period 6
thien-chṳ́ phài-lie̍t	[Xe] 4f14 5d7 6s2
per shell	2, 8, 18, 32, 15, 2
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	2719 K ​(2446 °C, ​4435 °F)
pui-tiám	4403 K ​(4130 °C, ​7466 °F)
Me̍t-thu near Sit-vûn	22.56 g·cm−3
19 g·cm−3
Yùng-fa-ngie̍t	41.12 kJ·mol−1
Chîn-fat-ngie̍t	564 kJ·mol−1
Ngie̍t-yùng-liong	25.10 J·mol−1·K−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 2713 2957 3252 3614 4069 4659
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	−3, −1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9[2]
Thien-fu-sin	Pauling scale: 2.20
Thien-lì-nèn	1st: 880 kJ·mol−1 2nd: 1600 kJ·mol−1
Ngièn-chṳ́ pan-kang	empirical: 136 pm
Khiung-ka pan-kang	141±6 pm
Miscellanea
Chîn-thí keu-chho	​face-centered cubic (fcc)
Sâng-suk thin rod	4825 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong	6.4 µm·m−1·K−1
Ngie̍t-chhòn-thô-li̍t	147 W·m−1·K−1
Thien-chú-li̍t	47.1 nΩ·m (at 20 °C)
Chhṳ̀-sin	paramagnetic[3]
Young's modulus	528 GPa
Shear modulus	210 GPa
Bulk modulus	320 GPa
Poisson ratio	0.26
Mohs hardness	6.5
Vickers hardness	1760–2200 MPa
Brinell hardness	1670 MPa
CAS Registry Number	7439-88-5
Le̍k-sú
Discovery and first isolation	Smithson Tennant (1803)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Iridium ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 188Ir syn 1.73 d ε 1.64 188Os 189Ir syn 13.2 d ε 0.532 189Os 190Ir syn 11.8 d ε 2.000 190Os 191Ir 37.3% – (α) 2.0839 187Re 192Ir syn 73.827 d β− 1.460 192Pt ε 1.046 192Os 192m2Ir syn 241 y IT 0.161 192Ir 193Ir 62.7% – (α) 1.0173 189Re 193mIr syn 10.5 d IT 0.080 193Ir 194Ir syn 19.3 h β− 2.247 194Pt 194m2Ir syn 171 d IT – 194Ir
Decay modes in parentheses are predicted, but have not yet been observed

Iridium (Hon-ngî: 銥 yī) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Ir, ngièn-chṳ́ su-muk he 77.