Néptunium, 93 Np Pabaosan (nep-TEW -nee-əm ) Cingakan silvery metallic Nomor massa [237]
Wilangan atom (Z ) 93 Watek n/a Période période 7 Blok blok-f Konpigurasi éléktron [Rn ] 5f4 6d1 7s2 Éléktron per kulit 2, 8, 18, 32, 22, 9, 2 Pase ring STP padet Titik lebur 912±3 K (639±3 °C, 1182±5 °F) Titik didih 4447 K (4174 °C, 7545 °F) (extrapolated) Kapadetan (nampek s.r. ) alpha: 20.45 g/cm3 [ 1] accepted standard value: 19.38 g/cm3 Panes fusi 5.19 kJ/mol Panes panguapan 336 kJ/mol Kapasitas panes molar 29.46 J/(mol·K) Tekanan uap
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
2194
2437
Paindikan oksidasi +2, +3, +4,[ 2] +5 , +6, +7 (oksida ampotér ) Kaéléktronégatipan skala Pauling: 1.36 Wasa ionisasi Jeriji atom émpiris: 155 pm Jeriji kovalén 190±1 pm Garis spéktral saking néptuniumStruktur kristal ortorombus Konduktivitas térmal 6.3 W/(m⋅K) Resistivitas listrik 1.220 µΩ⋅m (at 22 °C) bacakan magnétik paramagnetic [ 3] Nomor CAS 7439-99-8 Pangaranan saking planét Néptunus , punika kaparinamain saking déwa segara Romawi Néptunus Panemuan Edwin McMillan miwah Philip H. Abelson (1940)
Kategori:Néptunium | pustaka
Np:
ring
itung saking C
bina
parihindik
pus
C
639
—
—
K
912
912
0
F
1182
1182
0
présisi maks
0
WD
String Module Error: Target string is empty
dagingan
C: 639±3, K: 912±3, F: 1182±5
pabligbagan
Np:
ring
itung saking C
bina
parihindik
pus
C
4174
—
—
K
4447
4447
0
F
7545
7545
0
présisi maks
0
WD
String Module Error: Target string is empty
dagingan
C: 4174, K: 4447, F: 7545
pabligbagan
(extrapolated)
Pustaka
Pustaka pacang tampil ring suratan, menawi lis puniki wantah tampil ring kaca puniki.
↑ 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. Kaaksés 2014-08-06 .
↑ Np(II), (III) and (IV) have been observed, see Dutkiewicz, Michał S.; Apostolidis, Christos; Walter, Olaf; Arnold, Polly L (2017). "Reduction chemistry of neptunium cyclopentadienide complexes: from structure to understanding" . Chem. Sci . 8 (4): 2553–2561. doi :10.1039/C7SC00034K . PMC 5431675 . PMID 28553487 .
↑ Magnetic susceptibility of the elements and inorganic compounds , in Handbook of Chemistry and Physics 81st edition, CRC press.
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