Promethium

Promethium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 61, hoà-ha̍k hû-hō sī Pm.

Promethium,  ₆₁Pm

Spectral lines of promethium
Ki-pún sèng-chit
Miâ, hû-hō	promethium, Pm
Gōa-hêng	metallic
Promethium tī chiu-kî-piáu lāi ê ūi-tì
– ↑ Pm ↓ Np neodymium ← promethium → samarium
Goân-chú-hoan	61
Goân-chú-liōng	[145]
Goân-sò͘ lūi-pia̍t	lanthanum-hē
Cho̍k, hun-khu	n/a, f khu
Chiu-kî	tē 6 chiu-kî
Tiān-chú pâi-lia̍t	[Xe] 4f5 6s2
per shell	2, 8, 18, 23, 8, 2
Bu̍t-lí sèng-chit
Siòng	solid
Iûⁿ-tiám	1315 K ​(1042 °C, ​1908 °F)
Hut-tiám	3273 K ​(3000 °C, ​5432 °F)
Bi̍t-tō͘  (sek-un)	7.26 g·cm−3
Iûⁿ-hoà-jia̍t	7.13 kJ·mol−1
Cheng-hoat-jia̍t	289 kJ·mol−1
Goân-chú sèng-chit
Sng-hòa-sò͘	3, 2 ​(a mildly basic oxide)
Tiān-hū-tō͘	Pauling scale: 1.13 (?)
Tiān-lī-lêng	1st: 540 kJ·mol−1 2nd: 1050 kJ·mol−1 3rd: 2150 kJ·mol−1
Goân-chú pòaⁿ-kèng	empirical: 183 pm
Kiōng-kè pòaⁿ-kèng	199 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	​double hexagonal close-packed (dhcp)
Jia̍t-phòng-tiòng	9.0 µm·m−1·K−1 (at r.t.)
Jia̍t-thoân-tō-lu̍t	17.9 W·m−1·K−1
Tiān-chó͘-lu̍t	est. 0.75 µΩ·m (at r.t.)
Chû-sèng	paramagnetic
Young hē-sò͘	α form: est. 46 GPa
Shear hē-sò͘	α form: est. 18 GPa
Bulk hē-sò͘	α form: est. 33 GPa
Poisson pí	α form: est. 0.28
CAS teng-kì pian-hō	7440-12-2
Le̍k-sú
Hoat-hiān	Chien Shiung Wu, Emilio Segrè, Hans Bethe (1942)
Siōng chá hû-lî	Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin, Harold G. Richter (1945)
hō-miâ	Grace Mary Coryell (1945)
Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: promethium ê tông-ūi-sò͘
iso NA half-life DM DE (MeV) DP 145Pm syn 17.7 y ε 0.163 145Nd 146Pm syn 5.53 y ε 1.472 146Nd β− 1.542 146Sm 147Pm trace 2.6234 y β− 0.224 147Sm