Neodymium (Hon-ngî: 釹 nǚ) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Nd, ngièn-chṳ́ su-muk he 60.
Neodymium, 60Nd| ngoi-kôn |
|---|
silvery white
 |
| Kî-pún sin-sit |
|---|
| Miàng, fù-ho |
Neodymium, Nd |
|---|
| ngoi-hìn |
silvery white |
|---|
| Neodymium chhai chû-khì-péu ke vi-chi |
|---|
|
|
| ngièn-chṳ́ sì-sú |
60 |
|---|
| ngièn-chṳ́-liòng (±) |
144.242(3)[1] |
|---|
| ngièn-su lui-phe̍t |
lanthanum-hi |
|---|
| Chhu̍k, fûn-khî |
n/a, f-block |
|---|
| chû-khì |
period 6 |
|---|
| thien-chṳ́ phài-lie̍t |
[Xe] 4f4 6s2 |
|---|
| per shell |
2, 8, 18, 22, 8, 2 |
|---|
| vu̍t-lî sin-chṳt |
|---|
| Siông |
ku-thí |
|---|
| yùng-tiám |
1297 K (1024 °C, 1875 °F) |
|---|
| pui-tiám |
3347 K (3074 °C, 5565 °F) |
|---|
| Me̍t-thu near Sit-vûn |
7.01 g·cm−3 |
|---|
|
6.89 g·cm−3 |
| Yùng-fa-ngie̍t |
7.14 kJ·mol−1 |
|---|
| Chîn-fat-ngie̍t |
289 kJ·mol−1 |
|---|
| Ngie̍t-yùng-liong |
27.45 J·mol−1·K−1 |
|---|
chîn-hi-ap
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| chhai T (K)
|
1595
|
1774
|
1998
|
(2296)
|
(2715)
|
(3336)
| |
| Ngièn-chṳ́ sin-chṳt |
|---|
| Yông-fa-su |
+4, +3, +2 (a mildly basic oxide) |
|---|
| Thien-fu-sin |
Pauling scale: 1.14 |
|---|
| Thien-lì-nèn |
1st: 533.1 kJ·mol−1
2nd: 1040 kJ·mol−1
3rd: 2130 kJ·mol−1 |
|---|
| Ngièn-chṳ́ pan-kang |
empirical: 181 pm |
|---|
| Khiung-ka pan-kang |
201±6 pm |
|---|
| Miscellanea |
|---|
| Chîn-thí keu-chho |
double hexagonal close-packed (dhcp) |
|---|
| Sâng-suk thin rod |
2330 m·s−1 (at 20 °C) |
|---|
| Ngie̍t-phàng-chong |
α, poly: 9.6 µm·m−1·K−1 (at r.t.) |
|---|
| Ngie̍t-chhòn-thô-li̍t |
16.5 W·m−1·K−1 |
|---|
| Thien-chú-li̍t |
α, poly: 643 nΩ·m |
|---|
| Chhṳ̀-sin |
paramagnetic, antiferromagnetic below 20 K[2] |
|---|
| Young's modulus |
α form: 41.4 GPa |
|---|
| Shear modulus |
α form: 16.3 GPa |
|---|
| Bulk modulus |
α form: 31.8 GPa |
|---|
| Poisson ratio |
α form: 0.281 |
|---|
| Vickers hardness |
345–745 MPa |
|---|
| Brinell hardness |
265–700 MPa |
|---|
| CAS Registry Number |
7440-00-8 |
|---|
| Le̍k-sú |
|---|
| Fat-hien |
Carl Auer von Welsbach (1885) |
|---|
| Chui vún-thin ke thùng-vi-su |
|---|
|
Chú vùn-chông: Neodymium ke thùng-vi-su |
| iso
|
NA
|
half-life
|
DM
|
DE (MeV)
|
DP
|
| 142Nd
|
27.2%
|
–
|
(SF)
|
<53.264
|
|
| 143Nd
|
12.2%
|
–
|
(α)
|
0.5214
|
139Ce
|
| 144Nd
|
23.8%
|
2.29×1015 y
|
α
|
1.905
|
140Ce
|
| 145Nd
|
8.3%
|
>6×1016 y
|
(α)
|
1.5784
|
141Ce
|
| 146Nd
|
17.2%
|
–
|
(α)
|
1.1822
|
142Ce
|
| (β−β−)
|
0.0702
|
146Sm
|
| 148Nd
|
5.7%
|
>3.0×1018 y
|
(α)
|
0.5986
|
144Ce
|
| (β−β−)
|
1.9288
|
148Sm
|
| 150Nd
|
5.6%
|
6.7×1018 y
|
β−β−
|
3.367
|
150Sm
| |
|
Decay modes in parentheses are predicted, but have not yet been observed |
