Lanthanum sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 57, hoà-ha̍k hû-hō sī La.
Lanthanum, 57La
 |
Ki-pún sèng-chit |
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Miâ, hû-hō |
lanthanum, La |
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Gōa-hêng |
silvery white |
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Lanthanum tī chiu-kî-piáu lāi ê ūi-tì |
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|
Goân-chú-hoan |
57 |
---|
Goân-chú-liōng (±) |
138.90547(7)[1] |
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Goân-sò͘ lūi-pia̍t |
lanthanum-hē sometimes considered a transition metal |
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Cho̍k, hun-khu |
n/a, f khu |
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Chiu-kî |
tē 6 chiu-kî |
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Tiān-chú pâi-lia̍t |
[Xe] 5d1 6s2 |
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per shell |
2, 8, 18, 18, 9, 2 |
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Bu̍t-lí sèng-chit |
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Siòng |
kò͘-thé |
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Iûⁿ-tiám |
1193 K (920 °C, 1688 °F) |
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Hut-tiám |
3737 K (3464 °C, 6267 °F) |
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Bi̍t-tō͘ (sek-un) |
6.162 g·cm−3 |
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5.94 g·cm−3 |
Iûⁿ-hoà-jia̍t |
6.20 kJ·mol−1 |
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Cheng-hoat-jia̍t |
400 kJ·mol−1 |
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Jia̍t-iông-liōng |
27.11 J·mol−1·K−1 |
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cheng-khì-ap (extrapolated)
P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
| tī T (K)
|
2005
|
2208
|
2458
|
2772
|
3178
|
3726
|
|
Goân-chú sèng-chit |
---|
Sng-hòa-sò͘ |
3, 2, 1 (a strongly basic oxide) |
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Tiān-hū-tō͘ |
Pauling scale: 1.10 |
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Tiān-lī-lêng |
1st: 538.1 kJ·mol−1 2nd: 1067 kJ·mol−1 3rd: 1850.3 kJ·mol−1 |
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Goân-chú pòaⁿ-kèng |
empirical: 187 pm |
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Kiōng-kè pòaⁿ-kèng |
207±8 pm |
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Cha̍p-lio̍k |
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Chiⁿ-thé kò͘-chō |
double hexagonal close-packed (dhcp) |
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Siaⁿ-sok (sòe kùn-á) |
2475 m·s−1 (at 20 °C) |
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Jia̍t-phòng-tiòng |
α, poly: 12.1 µm·m−1·K−1 (at r.t.) |
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Jia̍t-thoân-tō-lu̍t |
13.4 W·m−1·K−1 |
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Tiān-chó͘-lu̍t |
α, poly: 615 nΩ·m (at r.t.) |
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Chû-sèng |
paramagnetic[2] |
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Young hē-sò͘ |
α form: 36.6 GPa |
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Shear hē-sò͘ |
α form: 14.3 GPa |
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Bulk hē-sò͘ |
α form: 27.9 GPa |
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Poisson pí |
α form: 0.280 |
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Mohs ngē-tō͘ |
2.5 |
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Vickers ngē-tō͘ |
360–1750 MPa |
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Brinell ngē-tō͘ |
350–400 MPa |
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CAS teng-kì pian-hō |
7439-91-0 |
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Le̍k-sú |
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Hoat-hiān |
Carl Gustaf Mosander (1838) |
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Chòe ún-tēng ê tông-ūi-sò͘ |
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Chú bûn-chiong: lanthanum ê tông-ūi-sò͘ |
|
Decay modes in parentheses are predicted, but have not yet been observed |