Neptunium

Neptunium (Hon-ngî: 錼 nài fe̍t-chá 鎿 ná) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì Np, ngièn-chṳ́ su-muk he 93.

Neptunium,  ₉₃Np

ngoi-kôn
silvery metallic
Kî-pún sin-sit
Miàng, fù-ho	Neptunium, Np
ngoi-hìn	silvery metallic
Neptunium chhai chû-khì-péu ke vi-chi
Pm ↑ Np ↓ (Uqp) uranium ← Neptunium → plutonium
ngièn-chṳ́ sì-sú	93
ngièn-chṳ́-liòng	(237)
ngièn-su lui-phe̍t	actinium-hi
Chhu̍k, fûn-khî	n/a, f-block
chû-khì	period 7
thien-chṳ́ phài-lie̍t	[Rn] 5f4 6d1 7s2
per shell	2, 8, 18, 32, 22, 9, 2
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	912±3 K ​(639±3 °C, ​1182±5 °F)
pui-tiám	4447 K ​(4174 °C, ​7545 °F) (extrapolated)
Me̍t-thu near Sit-vûn	alpha: 20.45 g·cm−3 accepted standard value: 19.38 g·cm−3
Yùng-fa-ngie̍t	5.19 kJ·mol−1
Chîn-fat-ngie̍t	336 kJ·mol−1
Ngie̍t-yùng-liong	29.46 J·mol−1·K−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 2194 2437
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	7, 6, 5, 4, 3, 2 ​(an amphoteric oxide)
Thien-fu-sin	Pauling scale: 1.36
Thien-lì-nèn	1st: 604.5 kJ·mol−1
Ngièn-chṳ́ pan-kang	empirical: 155 pm
Khiung-ka pan-kang	190±1 pm
Miscellanea
Chîn-thí keu-chho	​orthorhombic
Ngie̍t-chhòn-thô-li̍t	6.3 W·m−1·K−1
Thien-chú-li̍t	1.220 µΩ·m (at 22 °C)
Chhṳ̀-sin	paramagnetic
CAS Registry Number	7439-99-8
Le̍k-sú
Hí-miàng	after planet Neptune, itself named after Roman god of the sea Neptune
Fat-hien	Edwin McMillan and Philip H. Abelson (1940)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Neptunium ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 235Np syn 396.1 d α 5.192 231Pa ε 0.124 235U 236Np syn 1.54×105 y ε 236U β− 236Pu α 232Pa 237Np trace 2.144×106 y α 4.959 233Pa 239Np trace 2.356 d β− 0.218 239Pu