Plutonium (Hon-ngî: 鈽 bù fe̍t-chá 鈈 bù) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Pu, ngièn-chṳ́ su-muk he 94.
Quick Facts ngoi-kôn, Kî-pún sin-sit ...
Plutonium, 94Pungoi-kôn |
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silvery white, tarnishing to dark gray in air
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Kî-pún sin-sit |
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Miàng, fù-ho |
Plutonium, Pu |
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ngoi-hìn |
silvery white, tarnishing to dark gray in air |
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Plutonium chhai chû-khì-péu ke vi-chi |
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ngièn-chṳ́ sì-sú |
94 |
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ngièn-chṳ́-liòng |
(244) |
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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] 5f6 7s2 |
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per shell |
2, 8, 18, 32, 24, 8, 2 |
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vu̍t-lî sin-chṳt |
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Siông |
ku-thí |
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yùng-tiám |
912.5 K (639.4 °C, 1182.9 °F) |
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pui-tiám |
3505 K (3228 °C, 5842 °F) |
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Me̍t-thu near Sit-vûn |
19.816 g·cm−3 |
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16.63 g·cm−3 |
Yùng-fa-ngie̍t |
2.82 kJ·mol−1 |
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Chîn-fat-ngie̍t |
333.5 kJ·mol−1 |
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Ngie̍t-yùng-liong |
35.5 J·mol−1·K−1 |
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chîn-hi-ap
P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
chhai T (K) |
1756 |
1953 |
2198 |
2511 |
2926 |
3499 |
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Ngièn-chṳ́ sin-chṳt |
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Yông-fa-su |
8, 7, 6, 5, 4, 3, 2, 1 (an amphoteric oxide) |
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Thien-fu-sin |
Pauling scale: 1.28 |
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Thien-lì-nèn |
1st: 584.7 kJ·mol−1 |
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Ngièn-chṳ́ pan-kang |
empirical: 159 pm |
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Khiung-ka pan-kang |
187±1 pm |
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Miscellanea |
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Chîn-thí keu-chho |
monoclinic |
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Sâng-suk |
2260 m·s−1 |
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Ngie̍t-phàng-chong |
46.7 µm·m−1·K−1 (at 25 °C) |
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Ngie̍t-chhòn-thô-li̍t |
6.74 W·m−1·K−1 |
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Thien-chú-li̍t |
1.460 µΩ·m (at 0 °C) |
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Chhṳ̀-sin |
paramagnetic |
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Young's modulus |
96 GPa |
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Shear modulus |
43 GPa |
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Poisson ratio |
0.21 |
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CAS Registry Number |
7440-07-5 |
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Le̍k-sú |
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Hí-miàng |
after dwarf planet Pluto, itself named after classical god of the underworld Pluto |
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Fat-hien |
Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan (1940–1) |
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Chui vún-thin ke thùng-vi-su |
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Chú vùn-chông: Plutonium ke thùng-vi-su |
iso |
NA |
half-life |
DM |
DE (MeV) |
DP |
238Pu |
trace |
87.74 y |
SF |
204.66 |
– |
α |
5.5 |
234U |
239Pu |
trace |
2.41×104 y |
SF |
207.06 |
– |
α |
5.157 |
235U |
240Pu |
trace |
6.5×103 y |
SF |
205.66 |
– |
α |
5.256 |
236U |
241Pu |
syn |
14 y |
β− |
0.02078 |
241Am |
SF |
210.83 |
– |
242Pu |
syn |
3.73×105 y |
SF |
209.47 |
– |
α |
4.984 |
238U |
244Pu |
trace |
8.08×107 y |
α |
4.666 |
240U |
SF |
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– |
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