Neptunium sī 1 ê hoà-ha̍k goân-sò͘ . I ê goân-chú-hoan sī 93, hoà-ha̍k hû-hō sī Np.
Neptunium, 93 Np Ki-pún sèng-chit Miâ, hû-hō neptunium, Np Gōa-hêng silvery metallic Neptunium tī chiu-kî-piáu lāi ê ūi-tì
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 [ 1] 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 cheng-khì-ap
P (Pa)
1
10
100
1 k
10 k
100 k
tī T (K)
2194
2437
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 [ 2] 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
↑ 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 237 Np Sphere" (PDF) . Japanese Atomic Energy Agency. goân-loē-iông (PDF) tī 2013-01-06 hőng khó͘-pih. 2014-08-06 khòaⁿ--ê .
↑ Magnetic susceptibility of the elements and inorganic compounds , in Handbook of Chemistry and Physics 81st edition, CRC press.