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Barium, 56Ba
 |
| Ki-pún sèng-chit |
|---|
| Miâ, hû-hō |
barium, Ba |
|---|
| Gōa-hêng |
silvery gray; with a pale yellow tint[1] |
|---|
| Barium tī chiu-kî-piáu lāi ê ūi-tì |
|---|
|
|
| Goân-chú-hoan |
56 |
|---|
| Goân-chú-liōng (±) |
137.327(7)[2] |
|---|
| Goân-sò͘ lūi-pia̍t |
kiⁿ-thó͘ kim-sio̍k |
|---|
| Cho̍k, hun-khu |
2 cho̍k, s khu |
|---|
| Chiu-kî |
tē 6 chiu-kî |
|---|
| Tiān-chú pâi-lia̍t |
[Xe] 6s2 |
|---|
| per shell |
2, 8, 18, 18, 8, 2 |
|---|
| Bu̍t-lí sèng-chit |
|---|
| Siòng |
kò͘-thé |
|---|
| Iûⁿ-tiám |
1000 K (727 °C, 1341 °F) |
|---|
| Hut-tiám |
2118 K (1845 °C, 3353 °F) |
|---|
| Bi̍t-tō͘ (sek-un) |
3.51 g·cm−3 |
|---|
|
3.338 g·cm−3 |
| Iûⁿ-hoà-jia̍t |
7.12 kJ·mol−1 |
|---|
| Cheng-hoat-jia̍t |
142 kJ·mol−1 |
|---|
| Jia̍t-iông-liōng |
28.07 J·mol−1·K−1 |
|---|
cheng-khì-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| tī T (K)
|
911
|
1038
|
1185
|
1388
|
1686
|
2170
| |
| Goân-chú sèng-chit |
|---|
| Sng-hòa-sò͘ |
+2, +1 (a strongly basic oxide) |
|---|
| Tiān-hū-tō͘ |
Pauling scale: 0.89 |
|---|
| Tiān-lī-lêng |
1st: 502.9 kJ·mol−1
2nd: 965.2 kJ·mol−1
3rd: 3600 kJ·mol−1 |
|---|
| Goân-chú pòaⁿ-kèng |
empirical: 222 pm |
|---|
| Kiōng-kè pòaⁿ-kèng |
215±11 pm |
|---|
| Van der Waals pòaⁿ-kèng |
268 pm |
|---|
| Cha̍p-lio̍k |
|---|
| Chiⁿ-thé kò͘-chō |
body-centered cubic (bcc) |
|---|
| Siaⁿ-sok (sòe kùn-á) |
1620 m·s−1 (at 20 °C) |
|---|
| Jia̍t-phòng-tiòng |
20.6 µm·m−1·K−1 (at 25 °C) |
|---|
| Jia̍t-thoân-tō-lu̍t |
18.4 W·m−1·K−1 |
|---|
| Tiān-chó͘-lu̍t |
332 nΩ·m (at 20 °C) |
|---|
| Chû-sèng |
paramagnetic[3] |
|---|
| Young hē-sò͘ |
13 GPa |
|---|
| Shear hē-sò͘ |
4.9 GPa |
|---|
| Bulk hē-sò͘ |
9.6 GPa |
|---|
| Mohs ngē-tō͘ |
1.25 |
|---|
| CAS teng-kì pian-hō |
7440-39-3 |
|---|
| Le̍k-sú |
|---|
| Hoat-hiān |
Carl Wilhelm Scheele (1772) |
|---|
| Siōng chá hû-lî |
Humphry Davy (1808) |
|---|
| Chòe ún-tēng ê tông-ūi-sò͘ |
|---|
|
Chú bûn-chiong: barium ê tông-ūi-sò͘ |
| iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
| 130Ba
|
0.106%
|
(0.5–2.7)×1021 y
|
εε
|
2.620
|
130Xe
|
| 132Ba
|
0.101%
|
>3×1020 y
|
(β+β+)
|
0.846
|
132Xe
|
| 133Ba
|
syn
|
10.51 y
|
ε
|
0.517
|
133Cs
|
| 134Ba
|
2.417%
|
–
|
(SF)
|
<40.520
|
|
| 135Ba
|
6.592%
|
–
|
(SF)
|
<39.357
|
|
| 136Ba
|
7.854%
|
–
|
(SF)
|
<38.041
|
|
| 137Ba
|
11.23%
|
–
|
(SF)
|
<35.722
|
|
| 138Ba
|
71.7%
|
–
|
(SF)
|
<34.302
|
| |
|
Decay modes in parentheses are predicted, but have not yet been observed |
Barium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 56, hoà-ha̍k hû-hō sī Ba.
