Neptunium

**Neptunium, ₉₃Np**
Ki-pún sèng-chit
Miâ, hû-hō	neptunium, Np
Gōa-hêng	silvery metallic
Neptunium tī chiu-kî-piáu lāi ê ūi-tì
	uranium ← neptunium → plutonium
Goân-chú-hoan	93
Goân-chú-liōng	(237)
Goân-sò͘ lūi-pia̍t	actinium-hē
Cho̍k, hun-khu	n/a, f khu
Chiu-kî	tē 7 chiu-kî
Tiān-chú pâi-lia̍t	[Rn] 5f4 6d1 7s2
per shell	2, 8, 18, 32, 22, 9, 2
Bu̍t-lí sèng-chit
Siòng	solid
Iûⁿ-tiám	912±3 K (639±3 °C, 1182±5 °F)
Hut-tiám	4447 K (4174 °C, 7545 °F) (extrapolated)
Bi̍t-tō͘ (sek-un)	alpha: 20.45 g·cm−3 ; accepted standard value: 19.38 g·cm−3
Iûⁿ-hoà-jia̍t	5.19 kJ·mol−1
Cheng-hoat-jia̍t	336 kJ·mol−1
Jia̍t-iông-liōng	29.46 J·mol−1·K−1
Goân-chú sèng-chit
Sng-hòa-sò͘	7, 6, 5, 4, 3, 2 (an amphoteric oxide)
Tiān-hū-tō͘	Pauling scale: 1.36
Tiān-lī-lêng	1st: 604.5 kJ·mol−1
Goân-chú pòaⁿ-kèng	empirical: 155 pm
Kiōng-kè pòaⁿ-kèng	190±1 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō	orthorhombic
Jia̍t-thoân-tō-lu̍t	6.3 W·m−1·K−1
Tiān-chó͘-lu̍t	1.220 µΩ·m (at 22 °C)
Chû-sèng	paramagnetic
CAS teng-kì pian-hō	7439-99-8
Le̍k-sú
Hō-miâ	after planet Neptune, itself named after Roman god of the sea Neptune
Hoat-hiān	Edwin McMillan and Philip H. Abelson (1940)
Chòe ún-tēng ê tông-ūi-sò͘
	Chú bûn-chiong: neptunium ê tông-ūi-sò͘

Neptunium sī 1 ê hoà-ha̍k goân-sò͘. I ê goân-chú-hoan sī 93, hoà-ha̍k hû-hō sī Np.

Chham-khó[siu-kái | kái goân-sí-bé]

↑ Sanchez, Rene G.; Loaiza, David J.; Kimpland, Robert H.; Hayes, David K.; Cappiello, Charlene C.; Myers, William L.; Jaegers, Peter J.; Clement, Steven D.; Butterfield, Kenneth B. "Criticality of a ²³⁷Np Sphere" (PDF). Japanese Atomic Energy Agency. 2014-08-06 khòaⁿ--ê.
↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.

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