| ngoi-kôn |
|---|
|
unknown, probably metallic |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Astatine, At |
|---|
| ngoi-hìn |
unknown, probably metallic |
|---|
| Astatine chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
85 |
|---|
| ngièn-chṳ́-liòng |
(210) |
|---|
| ngièn-su lui-phe̍t |
lui-kîm-su̍k, sometimes classified as a nonmetal, or a metal[2] |
|---|
| Chhu̍k, fûn-khî |
17 chhu̍k, p-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 4f14 5d10 6s2 6p5 |
|---|
| per shell |
2, 8, 18, 32, 18, 7 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
575 K (302 °C, 576 °F) |
|---|
| pui-tiám |
610 K (337 °C, 639 °F) |
|---|
| Me̍t-thu near Sit-vûn |
(At2) 6.35±0.15 g·cm−3 (predicted)[3] |
|---|
| Mol thí-chit |
(At2) 32.94 cm3·mol−1 (predicted)[3] |
|---|
| Yùng-fa-ngie̍t |
ca. 6 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
(At2) 54.39 kJ·mol−1[4] |
|---|
chîn-hi-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
| | chhai T (K)
|
361
|
392
|
429
|
475
|
531
|
607
|
|
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
−1, +1, +3, +5, +7 |
|---|
| Thien-fu-sin |
Pauling scale: 2.2 |
|---|
| Thien-lì-nèn |
1st: 899.003 kJ·mol−1[6] |
|---|
| Khiung-ka pan-kang |
150 pm |
|---|
| Van der Waals pan-kang |
202 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
face-centered cubic (fcc)
(predicted)[2] |
|---|
| Ngie̍t-chhòn-thô-li̍t |
1.7 W·m−1·K−1 |
|---|
| CAS Registry Number |
7440-68-8 |
|---|
| Le̍k-sú |
|---|
| Hí-miàng |
after Greek astatos (αστατος), meaning "unstable" |
|---|
| Fat-hien |
Dale R. Corson, Kenneth Ross MacKenzie, Emilio Segrè (1940) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Astatine ke thùng-vi-su |
| iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
|---|
| 209At
|
syn
|
5.41 h
|
β+
|
3.486
|
209Po
| | α
|
5.758
|
205Bi
| | 210At
|
syn
|
8.1 h
|
β+ |
3.981
|
210Po
| | α
|
5.632
|
206Bi
| | 211At
|
syn
|
7.21 h
|
ε
|
0.786
|
211Po
| | α
|
5.983
|
207Bi
|
|
