Gadolinium

Gadolinium (Hon-ngî: 釓 gá) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Gd, ngièn-chṳ́ su-muk he 64.

Gadolinium,  ₆₄Gd

ngoi-kôn
silvery white
Kî-pún sin-sit
Miàng, fù-ho	Gadolinium, Gd
ngoi-hìn	silvery white
Gadolinium chhai chû-khì-péu ke vi-chi
– ↑ Gd ↓ Cm europium ← Gadolinium → terbium
ngièn-chṳ́ sì-sú	64
ngièn-chṳ́-liòng (±)	157.25(3)
ngièn-su lui-phe̍t	lanthanum-hi
Chhu̍k, fûn-khî	n/a, f-block
chû-khì	period 6
thien-chṳ́ phài-lie̍t	[Xe] 4f7 5d1 6s2
per shell	2, 8, 18, 25, 9, 2
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	1585 K ​(1312 °C, ​2394 °F)
pui-tiám	3273 K ​(3000 °C, ​5432 °F)
Me̍t-thu near Sit-vûn	7.90 g·cm−3
7.4 g·cm−3
Yùng-fa-ngie̍t	10.05 kJ·mol−1
Chîn-fat-ngie̍t	301.3 kJ·mol−1
Ngie̍t-yùng-liong	37.03 J·mol−1·K−1
chîn-hi-ap (calculated) P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 1836 2028 2267 2573 2976 3535
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	1, 2, 3 ​(a mildly basic oxide)
Thien-fu-sin	Pauling scale: 1.20
Thien-lì-nèn	1st: 593.4 kJ·mol−1 2nd: 1170 kJ·mol−1 3rd: 1990 kJ·mol−1
Ngièn-chṳ́ pan-kang	empirical: 180 pm
Khiung-ka pan-kang	196±6 pm
Miscellanea
Chîn-thí keu-chho	​hexagonal close-packed (hcp)
Sâng-suk thin rod	2680 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong	α poly: 9.4 µm·m−1·K−1 (at 100 °C)
Ngie̍t-chhòn-thô-li̍t	10.6 W·m−1·K−1
Thien-chú-li̍t	α, poly: 1.310 µΩ·m
Chhṳ̀-sin	ferromagnetic-paramagnetic transition at 293.4 K
Young's modulus	α form: 54.8 GPa
Shear modulus	α form: 21.8 GPa
Bulk modulus	α form: 37.9 GPa
Poisson ratio	α form: 0.259
Vickers hardness	510–950 MPa
CAS Registry Number	7440-54-2
Le̍k-sú
Hí-miàng	after the mineral Gadolinite (itself named after Johan Gadolin)
Fat-hien	Jean Charles Galissard de Marignac (1880)
First isolation	Lecoq de Boisbaudran (1886)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Gadolinium ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 152Gd 0.20% 1.08×1014 y α 2.205 148Sm 154Gd 2.18% – (α) 0.0812 150Sm 155Gd 14.80% – (α) 0.0812 151Sm 156Gd 20.47% – (SF) <71.541 157Gd 15.65% – (SF) <70.531 158Gd 24.84% – (SF) <70.965 160Gd 21.86% >1.3×1021 y (β−β−) 1.729 160Dy
Decay modes in parentheses are predicted, but have not yet been observed