| ngoi-kôn |
|---|
silvery metallic
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho | neptunium, Np |
|---|
| ngoi-hìn | silvery metallic |
|---|
| Neptunium chhai chû-khì-péu ke vi-chi |
|---|
|
| ngièn-chṳ́ sì-sú | 93 |
|---|
| ngièn-chṳ́-liòng | (237) |
|---|
| ngièn-su lui-phe̍t | actinium-hi |
|---|
| Chhu̍k, fûn-khî | n/a, f-block |
|---|
| chû-khì | period 7 |
|---|
| thien-chṳ́ phài-lie̍t | [Rn] 5f4 6d1 7s2 |
|---|
| per shell | 2, 8, 18, 32, 22, 9, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông | ku-thí |
|---|
| yùng-tiám | 912±3 K (639±3 °C, 1182±5 °F) |
|---|
| pui-tiám | 4447 K (4174 °C, 7545 °F) (extrapolated) |
|---|
| Me̍t-thu near Sit-vûn | alpha: 20.45 g·cm−3[1]
accepted standard value: 19.38 g·cm−3 |
|---|
| Yùng-fa-ngie̍t | 5.19 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t | 336 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong | 29.46 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
| | chhai T (K)
|
2194
|
2437
|
|
|
|
|
|
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su | 7, 6, 5, 4, 3, 2 (an amphoteric oxide) |
|---|
| Thien-fu-sin | Pauling scale: 1.36 |
|---|
| Thien-lì-nèn | 1st: 604.5 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang | empirical: 155 pm |
|---|
| Khiung-ka pan-kang | 190±1 pm |
|---|
