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Caesium, 55Cs
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Spectral lines of caesium |
Ki-pún sèng-chit |
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Miâ, hû-hō |
caesium, Cs |
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Phian-miâ |
cesium |
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Gōa-hêng |
silvery gold |
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Caesium tī chiu-kî-piáu lāi ê ūi-tì |
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|
Goân-chú-hoan |
55 |
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Goân-chú-liōng (±) |
132.90545196(6)[1] |
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Goân-sò͘ lūi-pia̍t |
kiⁿ-kim-sio̍k |
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Cho̍k, hun-khu |
1 cho̍k, s khu |
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Chiu-kî |
tē 6 chiu-kî |
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Tiān-chú pâi-lia̍t |
[Xe] 6s1 |
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per shell |
2, 8, 18, 18, 8, 1 |
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Bu̍t-lí sèng-chit |
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Siòng |
kò͘-thé |
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Iûⁿ-tiám |
301.7 K (28.5 °C, 83.3 °F) |
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Hut-tiám |
944 K (671 °C, 1240 °F) |
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Bi̍t-tō͘ (sek-un) |
1.93 g·cm−3 |
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1.843 g·cm−3 |
Lîm-kài-tiám |
1938 K, 9.4 MPa[2] |
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Iûⁿ-hoà-jia̍t |
2.09 kJ·mol−1 |
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Cheng-hoat-jia̍t |
63.9 kJ·mol−1 |
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Jia̍t-iông-liōng |
32.210 J·mol−1·K−1 |
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cheng-khì-ap
P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
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tī T (K)
|
418
|
469
|
534
|
623
|
750
|
940
| |
Goân-chú sèng-chit |
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Sng-hòa-sò͘ |
+1, −1[3] (a strongly basic oxide) |
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Tiān-hū-tō͘ |
Pauling scale: 0.79 |
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Tiān-lī-lêng |
1st: 375.7 kJ·mol−1 2nd: 2234.3 kJ·mol−1 3rd: 3400 kJ·mol−1 |
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Goân-chú pòaⁿ-kèng |
empirical: 265 pm |
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Kiōng-kè pòaⁿ-kèng |
244±11 pm |
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Van der Waals pòaⁿ-kèng |
343 pm |
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Cha̍p-lio̍k |
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Chiⁿ-thé kò͘-chō |
body-centered cubic (bcc) |
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Jia̍t-phòng-tiòng |
97 µm·m−1·K−1 (at 25 °C) |
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Jia̍t-thoân-tō-lu̍t |
35.9 W·m−1·K−1 |
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Tiān-chó͘-lu̍t |
205 nΩ·m (at 20 °C) |
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Chû-sèng |
paramagnetic[4] |
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Young hē-sò͘ |
1.7 GPa |
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Bulk hē-sò͘ |
1.6 GPa |
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Mohs ngē-tō͘ |
0.2 |
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Brinell ngē-tō͘ |
0.14 MPa |
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CAS teng-kì pian-hō |
7440-46-2 |
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Le̍k-sú |
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Hō-miâ |
from Latin caesius, sky blue, for its spectral colours |
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Hoat-hiān |
Robert Bunsen and Gustav Kirchhoff (1860) |
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Siōng chá hû-lî |
Carl Setterberg (1882) |
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Chòe ún-tēng ê tông-ūi-sò͘ |
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Chú bûn-chiong: caesium ê tông-ūi-sò͘ |
|
Decay modes in parentheses are predicted, but have not yet been observed |
Caesium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 55, hoà-ha̍k hû-hō sī Cs.