Neodymium

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
– ↑ Nd ↓ U praseodymium ← Neodymium → promethium
ngièn-chṳ́ sì-sú	60
ngièn-chṳ́-liòng (±)	144.242(3)
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
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