Gadolinium

Gadolinium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 64, hoà-ha̍k hû-hō sī Gd.

Gadolinium,  ₆₄Gd

Ki-pún sèng-chit
Miâ, hû-hō	gadolinium, Gd
Gōa-hêng	silvery white
Gadolinium tī chiu-kî-piáu lāi ê ūi-tì
– ↑ Gd ↓ Cm europium ← gadolinium → terbium
Goân-chú-hoan	64
Goân-chú-liōng (±)	157.25(3)[1]
Goân-sò͘ lūi-pia̍t	lanthanum-hē
Cho̍k, hun-khu	n/a, f khu
Chiu-kî	tē 6 chiu-kî
Tiān-chú pâi-lia̍t	[Xe] 4f7 5d1 6s2
per shell	2, 8, 18, 25, 9, 2
Bu̍t-lí sèng-chit
Siòng	solid
Iûⁿ-tiám	1585 K ​(1312 °C, ​2394 °F)
Hut-tiám	3273 K ​(3000 °C, ​5432 °F)
Bi̍t-tō͘  (sek-un)	7.90 g·cm−3
7.4 g·cm−3
Iûⁿ-hoà-jia̍t	10.05 kJ·mol−1
Cheng-hoat-jia̍t	301.3 kJ·mol−1
Jia̍t-iông-liōng	37.03 J·mol−1·K−1
cheng-khì-ap (calculated) P (Pa) 1 10 100 1 k 10 k 100 k tī T (K) 1836 2028 2267 2573 2976 3535
Goân-chú sèng-chit
Sng-hòa-sò͘	1, 2, 3 ​(a mildly basic oxide)
Tiān-hū-tō͘	Pauling scale: 1.20
Tiān-lī-lêng	1st: 593.4 kJ·mol−1 2nd: 1170 kJ·mol−1 3rd: 1990 kJ·mol−1
Goân-chú pòaⁿ-kèng	empirical: 180 pm
Kiōng-kè pòaⁿ-kèng	196±6 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	​hexagonal close-packed (hcp)
Siaⁿ-sok (sòe kùn-á)	2680 m·s−1 (at 20 °C)
Jia̍t-phòng-tiòng	α poly: 9.4 µm·m−1·K−1 (at 100 °C)
Jia̍t-thoân-tō-lu̍t	10.6 W·m−1·K−1
Tiān-chó͘-lu̍t	α, poly: 1.310 µΩ·m
Chû-sèng	ferromagnetic-paramagnetic transition at 293.4 K
Young hē-sò͘	α form: 54.8 GPa
Shear hē-sò͘	α form: 21.8 GPa
Bulk hē-sò͘	α form: 37.9 GPa
Poisson pí	α form: 0.259
Vickers ngē-tō͘	510–950 MPa
CAS teng-kì pian-hō	7440-54-2
Le̍k-sú
Hō-miâ	after the mineral Gadolinite (itself named after Johan Gadolin)
Hoat-hiān	Jean Charles Galissard de Marignac (1880)
Siōng chá hû-lî	Lecoq de Boisbaudran (1886)
Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: gadolinium ê tông-ūi-sò͘
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