Californium (Hon-ngî: 鉲 kǎ fe̍t-chá 鐦 kāi) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Cf, ngièn-chṳ́ su-muk he 98.
Californium, 98Cfngoi-kôn |
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silvery
|
Kî-pún sin-sit |
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Miàng, fù-ho |
Californium, Cf |
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ngoi-hìn |
silvery |
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Californium chhai chû-khì-péu ke vi-chi |
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|
ngièn-chṳ́ sì-sú |
98 |
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ngièn-chṳ́-liòng |
(251) |
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ngièn-su lui-phe̍t |
actinium-hi |
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Chhu̍k, fûn-khî |
n/a, f-block |
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chû-khì |
period 7 |
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thien-chṳ́ phài-lie̍t |
[Rn] 5f10 7s2 |
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per shell |
2, 8, 18, 32, 28, 8, 2 |
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vu̍t-lî sin-chṳt |
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Siông |
ku-thí |
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yùng-tiám |
1173 K (900 °C, 1652 °F) |
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pui-tiám |
1743 K (1470 °C, 2678 °F) (estimation)[3] |
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Me̍t-thu near Sit-vûn |
15.1 g·cm−3 |
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Ngièn-chṳ́ sin-chṳt |
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Yông-fa-su |
2, 3, 4 |
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Thien-fu-sin |
Pauling scale: 1.3 |
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Thien-lì-nèn |
1st: 608 kJ·mol−1 |
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Miscellanea |
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Chîn-thí keu-chho |
double hexagonal close-packed (dhcp) |
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Mohs hardness |
3–4 |
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CAS Registry Number |
7440-71-3 |
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Le̍k-sú |
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Hí-miàng |
after California, where it was discovered |
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Fat-hien |
Lawrence Berkeley National Laboratory (1950) |
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Chui vún-thin ke thùng-vi-su |
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Chú vùn-chông: Californium ke thùng-vi-su |
iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
248Cf
|
syn
|
333.5 d
|
α (100%)
|
6.369
|
244Cm
|
SF (2.9×10−3%)
|
0.0029
|
–
|
249Cf
|
syn
|
351 y
|
α (100%)
|
6.295
|
245Cm
|
SF (5.0×10−7%)
|
4.4×10−7
|
–
|
250Cf
|
syn
|
13.08 y
|
α (99.92%)
|
6.129
|
246Cm
|
SF (0.08%)
|
0.077
|
–
|
251Cf
|
syn
|
898 y
|
α
|
6.172
|
247Cm
|
252Cf
|
syn
|
2.645 y
|
α (96.91%)
|
6.217
|
248Cm
|
SF (3.09%)
|
–
|
–
|
253Cf
|
syn
|
17.81 d
|
β− (99.69%)
|
0.29
|
253Es
|
α (0.31%)
|
6.126
|
249Cm
|
254Cf
|
syn
|
60.5 d
|
SF (99.69%)
|
–
|
–
|
α (0.31%)
|
5.930
|
250Cm
| |