???? ????? ???????? ????????? ??
????, 79Au |
General properties |
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Appearance | ????? ???? |
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???? in the ???? ???? |
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????? ??? (Z) | 79 |
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Group, period | group 11, period 6 |
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Block | d-block |
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Standard atomic weight (Ar) | 196.966569(4) |
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???? ????? | [Xe] 4f14 5d10 6s1 |
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Electrons per shell | 2, 8, 18, 32, 18, 1 |
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Physical properties |
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???? |
Phase | ???? |
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???? ?????? | 1337.33 ????? (1064.18 °C, 1947.52 °F) |
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???? ?????? | 3129 K (2856 °C, 5173 °F) |
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????? near ???? ????? ???? | 19.30 g/cm3 |
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when liquid, at m.p. | 17.31 g/cm3 |
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????? ?????? | 12.55 ??? ?? ??? |
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Heat of | 324 kJ/mol |
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Molar heat capacity | 25.418 J/(mol·K) |
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????? ????
? (?????)
|
1
|
10
|
100
|
1 ??
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10 ??
|
100 ??
|
?? ?? (?????)
|
1646
|
1814
|
2021
|
2281
|
2620
|
3078
|
|
Atomic properties |
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?????? ???s | -1, 1, 2, 3, 4, 5 (amphoteric oxide) |
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???? ????? | Pauling scale: 2.54 |
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????? ???? | empirical: 144 ???????? |
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Covalent radius | 136±6 pm |
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???????? ???? | 166 pm |
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Miscellanea |
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???? ???? | Lattice face centered cubic |
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???? ?? ????? thin rod | 2030 m/s (at r.t.) |
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?????? ?????? | 14.2 μm/(m·K) (at 25 °C) |
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?? ??????? | 318 W/(m·K) |
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??????? | 22.14 n Ω·m (at 20 °C) |
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????????? | diamagnetic |
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Shear modulus | 27 GPa |
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Bulk modulus | 180 GPa |
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Poisson ratio | 0.44 |
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??? ?????? | 2.5 |
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Vickers hardness | 216 MPa |
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Brinell hardness | 25 HB MPa |
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??????? ???? ????? ??????? ??? | 7440-57-5 |
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Main isotopes of ???? |
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| references | in Wikidata |
??? ????? ???? ???? (???? 31.1 ???? ??) ???? ?? ????? ????? ???? ?? ??? ??????? ?? ?? ????? ?? ????? ??? ???? ???
百度 总决赛正如火如荼进行着,上海女排和天津女排也将迎来最关键的一场对决。
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???? ?? ???
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- ?????? ?? ???? ??? ??? ?????? ? ???? ??
- ?????? ?? ???? ?? ??? ????? ???? (????) ?? ???? ??[1]
???? ???? ??? colloidal ???? ??? ?? ?? ???? ??? ?? ????? ??? ?? ???? ???
?????
???? ??? ???????? ??????? ???? ??? ??? ????? ??? ???? ?? ???? ???? ?? ????? ?? ?????? ?? ????? ???? ???? ???? ???? 24 ????? ???? ???
?? ????? ?? ?? ???? ?????? ??? ?? ???? ???? ???????
????? |
??????? ???? ???? ??? |
???????
|
24 |
1000 |
???? ???? ???? ????? ??? ???? ????
|
24 ??????? |
999.9 |
???? ?? ????? ????? ??? ?????? ???? ???? ????? ??? ??? 9 ??? ???? ???
|
|
995 |
???? ?? ???? ???? London good delivery
|
22 |
916 |
????? ??? ???? ????? ??? ???? ???? ??????
|
20 |
833 |
????? ??? ???? ???? ?????? 20 ????? ?? ?? ???? ???
|
18 |
750 |
???? ???? ??? ???? ???? ??????
|
14 |
583 |
???? ?????? ??? ???? ???? ??????
|
10 |
417 |
?????? ?????? ??? ??????? ???? ???? ???? ?? ?????? ?????
|
9 |
375 |
???????? ( ??????? ) ??? ???? ???? ??????
|
8 |
333 |
???? ?? ??? ???? ??? ?????? ??? ??????? ???? ???? ???? ?? ?????? ?????
|
1 |
41.7 |
|
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