Iridium

Chhiùng Wikipedia lòi
Iridium,  77Ir
ngoi-kôn
silvery white
Two square pieces of gray foil
Kî-pún sin-sit
Miàng, fù-ho Iridium, Ir
ngoi-hìn silvery white
Iridium chhai chû-khì-péu ke vi-chi
Khiâng (sûng-ngièn-chṳ́ fî-kîm-su̍k)
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Actinium (actinium-hi)
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Protactinium (actinium-hi)
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Neptunium (actinium-hi)
Plutonium (actinium-hi)
Americium (actinium-hi)
Curium (actinium-hi)
Berkelium (actinium-hi)
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Hassium (ko-thu kîm-su̍k)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (ko-thu kîm-su̍k)
Nihonium (unknown chemical properties)
Flerovium (heu-ko-thu kîm-su̍k)
Moscovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tennessine (unknown chemical properties)
Oganesson (unknown chemical properties)
Rh

Ir

Mt
osmiumIridiumpha̍k-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-chhoface-centered cubic (fcc)
Face-centered cubic crystal structure for Iridium
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: ) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Ir, ngièn-chṳ́ su-muk he 77.

Chhâm-kháu chṳ̂-liau[phiên-siá | kói ngièn-sṳ́-mâ]

  1. Standard Atomic Weights 2013. Commission on Isotopic Abundances and Atomic Weights
  2. Wang, Guanjun; Zhou, Mingfei; Goettel, James T.; Schrobilgen, Gary G.; Su, Jing; Li, Jun; Schlöder, Tobias; Riedel, Sebastian (2014). "Identification of an iridium-containing compound with a formal oxidation state of IX". Nature 514: 475–477. doi:10.1038/nature13795. 
  3. Lide, D. R., pian. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th pán.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5. Archived from the original on 2011-03-03. 2018-06-10 chhà-khon.