Iridium (Óa-im: "i-lí-ti-ùm") sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 77, hoà-ha̍k hû-hō sī Ir.
Iridium, 77Ir |
Ki-pún sèng-chit |
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Miâ, hû-hō | iridium, Ir |
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Gōa-hêng | silvery white |
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Iridium tī chiu-kî-piáu lāi ê ūi-tì |
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Goân-chú-hoan | 77 |
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Goân-chú-liōng (±) | 192.217(3)[1] |
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Goân-sò͘ lūi-pia̍t | kòe-tō͘ kim-sio̍k |
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Cho̍k, hun-khu | 9 cho̍k, d khu |
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Chiu-kî | tē 6 chiu-kî |
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Tiān-chú pâi-lia̍t | [Xe] 4f14 5d7 6s2 |
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per shell | 2, 8, 18, 32, 15, 2 |
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Bu̍t-lí sèng-chit |
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Siòng | solid |
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Iûⁿ-tiám | 2719 K (2446 °C, 4435 °F) |
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Hut-tiám | 4403 K (4130 °C, 7466 °F) |
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Bi̍t-tō͘ (sek-un) | 22.56 g·cm−3 |
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19 g·cm−3 |
Iûⁿ-hoà-jia̍t | 41.12 kJ·mol−1 |
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Cheng-hoat-jia̍t | 564 kJ·mol−1 |
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Jia̍t-iông-liōng | 25.10 J·mol−1·K−1 |
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cheng-khì-apP (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k | tī T (K) | 2713 | 2957 | 3252 | 3614 | 4069 | 4659 |
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Goân-chú sèng-chit |
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Sng-hòa-sò͘ | −3, −1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9[2] |
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Tiān-hū-tō͘ | Pauling scale: 2.20 |
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Tiān-lī-lêng | 1st: 880 kJ·mol−1 2nd: 1600 kJ·mol−1 |
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Goân-chú pòaⁿ-kèng | empirical: 136 pm |
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Kiōng-kè pòaⁿ-kèng | 141±6 pm |
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Cha̍p-lio̍k |
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Chiⁿ-thé kò͘-chō | face-centered cubic (fcc) |
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Siaⁿ-sok (sòe kùn-á) | 4825 m·s−1 (at 20 °C) |
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Jia̍t-phòng-tiòng | 6.4 µm·m−1·K−1 |
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Jia̍t-thoân-tō-lu̍t | 147 W·m−1·K−1 |
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Tiān-chó͘-lu̍t | 47.1 nΩ·m (at 20 °C) |
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Chû-sèng | paramagnetic[3] |
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Young hē-sò͘ | 528 GPa |
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Shear hē-sò͘ | 210 GPa |
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Bulk hē-sò͘ | 320 GPa |
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Poisson pí | 0.26 |
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Mohs ngē-tō͘ | 6.5 |
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Vickers ngē-tō͘ | 1760–2200 MPa |
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Brinell ngē-tō͘ | 1670 MPa |
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CAS teng-kì pian-hō | 7439-88-5 |
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Le̍k-sú |
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Discovery and first isolation | Smithson Tennant (1803) |
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Chòe ún-tēng ê tông-ūi-sò͘ |
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Chú bûn-chiong: iridium ê tông-ūi-sò͘ |
iso | NA | half-life | DM | DE (MeV) | DP |
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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 |
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Decay modes in parentheses are predicted, but have not yet been observed |
Chham-khó