Barium, 56Ba| ngoi-kôn |
|---|
silvery gray; with a pale yellow tint[1]
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Barium, Ba |
|---|
| ngoi-hìn |
silvery gray; with a pale yellow tint[2] |
|---|
| Barium chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
56 |
|---|
| ngièn-chṳ́-liòng (±) |
137.327(7)[3] |
|---|
| ngièn-su lui-phe̍t |
kán-thú kîm-su̍k |
|---|
| Chhu̍k, fûn-khî |
2 chhu̍k, s-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 6s2 |
|---|
| per shell |
2, 8, 18, 18, 8, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
1000 K (727 °C, 1341 °F) |
|---|
| pui-tiám |
2118 K (1845 °C, 3353 °F) |
|---|
| Me̍t-thu near Sit-vûn |
3.51 g·cm−3 |
|---|
|
3.338 g·cm−3 |
| Yùng-fa-ngie̍t |
7.12 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
142 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
28.07 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| chhai T (K) |
911 |
1038 |
1185 |
1388 |
1686 |
2170 |
|
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
+2, +1 (a strongly basic oxide) |
|---|
| Thien-fu-sin |
Pauling scale: 0.89 |
|---|
| Thien-lì-nèn |
1st: 502.9 kJ·mol−1
2nd: 965.2 kJ·mol−1
3rd: 3600 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 222 pm |
|---|
| Khiung-ka pan-kang |
215±11 pm |
|---|
| Van der Waals pan-kang |
268 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
body-centered cubic (bcc) |
|---|
| Sâng-suk thin rod |
1620 m·s−1 (at 20 °C) |
|---|
| Ngie̍t-phàng-chong |
20.6 µm·m−1·K−1 (at 25 °C) |
|---|
| Ngie̍t-chhòn-thô-li̍t |
18.4 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
332 nΩ·m (at 20 °C) |
|---|
| Chhṳ̀-sin |
paramagnetic[4] |
|---|
| Young's modulus |
13 GPa |
|---|
| Shear modulus |
4.9 GPa |
|---|
| Bulk modulus |
9.6 GPa |
|---|
| Mohs hardness |
1.25 |
|---|
| CAS Registry Number |
7440-39-3 |
|---|
| Le̍k-sú |
|---|
| Fat-hien |
Carl Wilhelm Scheele (1772) |
|---|
| First isolation |
Humphry Davy (1808) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Barium ke thùng-vi-su |
| 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 (Hon-ngî: 鋇 bèi) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Ba, ngièn-chṳ́ su-muk he 56.
