Neptunioa (Np)

Zenbaki atomikoa 93 duen elementu kimiko artifizial eta erradioaktiboa, transuranidoen multzokoa. Metal zuri zilarkara da eta uranioaren antzeko propietateak ditu.

Atomic Number	93
Atomic Weight	237
masa-zenbaki	219

Group
Period	7
Block	f

protoi	93 p⁺
neutroi	126 n⁰
elektroi	93 e^-

Animated Bohrren eredu atomikoa of Np (Neptunioa)

Propietate Fisiko

Erradio Atomiko	175 pm 281 pm
bolumen molar	21,1 cm³/mol
Erradio Kobalente	171 pm 136 pm 116 pm 190 pm
Metallic Radius
Erradio ioniko	110 pm 101 pm 87 pm 98 pm 75 pm 72 pm 71 pm 117,8 pm
Crystal Radius	124 pm 115 pm 101 pm 112 pm 89 pm 86 pm 85 pm 131,8 pm
Van der Waalsen erradio	239 pm 252 pm 342,4 pm
dentsitatea	20,2 g/cm³

Magnitude Fisiko

energia

proton affinity
Afinitate elektroniko
ionizazio energia	6,2655 eV/particle 11,5 eV/particle 19,7 eV/particle 33,8 eV/particle 48 eV/particle 65 eV/particle 92 eV/particle 107 eV/particle 121 eV/particle 136 eV/particle 151 eV/particle 179 eV/particle 196 eV/particle 233 eV/particle 252 eV/particle 355 eV/particle 382 eV/particle 408 eV/particle 438 eV/particle 466 eV/particle 495 eV/particle 535 eV/particle 565 eV/particle 596 eV/particle 626 eV/particle 770 eV/particle 810 eV/particle 850 eV/particle 880 eV/particle 980 eV/particle 1.020 eV/particle 1.130 eV/particle 1.170 eV/particle 1.280 eV/particle 1.360 eV/particle 1.430 eV/particle 1.510 eV/particle 1.590 eV/particle 1.670 eV/particle 1.740 eV/particle 1.820 eV/particle 1.910 eV/particle 1.990 eV/particle 2.070 eV/particle 2.140 eV/particle 2.200 eV/particle 2.310 eV/particle 2.675 eV/particle 2.745 eV/particle 2.817 eV/particle 2.894 eV/particle 2.969 eV/particle 3.041 eV/particle 3.181 eV/particle 3.255 eV/particle 3.338 eV/particle 3.413 eV/particle 3.718 eV/particle 3.792 eV/particle 3.872 eV/particle 3.947 eV/particle 4.353 eV/particle 4.441 eV/particle 4.658 eV/particle 4.744 eV/particle 7.610 eV/particle 7.770 eV/particle 7.950 eV/particle 8.130 eV/particle 8.310 eV/particle 8.480 eV/particle 8.890 eV/particle 9.070 eV/particle 9.270 eV/particle 9.450 eV/particle 9.970 eV/particle 10.130 eV/particle 10.300 eV/particle 10.460 eV/particle 11.740 eV/particle 11.930 eV/particle 12.320 eV/particle 12.500 eV/particle 25.870 eV/particle 26.300 eV/particle 26.770 eV/particle 27.210 eV/particle 31.910 eV/particle 32.500 eV/particle 33.300 eV/particle 33.722,2 eV/particle 132.901,8 eV/particle 135.202 eV/particle

Irakite-entalpia	336 kJ/mol
urtze-entalpia	9,6 kJ/mol
formazio entalpia estandarra	464,8 kJ/mol
elektroi

elektroi geruza	2, 8, 18, 32, 22, 9, 2

balentzia-elektroi	2 ⓘ

electron configuration	[Rn] 5f⁴ 6d¹ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f⁴ 6d¹ 7s²

Oxidazio-egoera	2, 3, 4, 5, 6, 7
Elektronegatibotasun	0.14265 1.3
Electrophilicity Index
materiaren funtsezko egoera

materiaren egoera	Solid
materiaren egoera gaseoso
Boiling Point
Melting Point	917,15 K
critical pressure
critical temperature
Puntu hirukoitz
appearance
kolore	Silver #ffffff #0080ff #0080ff
appearance	silvery metallic
errefrakzio-indize
thermodynamic material property
Thermal Conductivity
Bero-dilatazio
molar heat capacity
Specific Heat Capacity
indize adiabatiko
electrical properties
type	Conductor
Eroankortasun elektriko	0,83 MS/m
Erresistibitate elektriko	0,0000012 Ω*m
Supereroankortasun
Magnetismo
type
suszeptibilitate magnetiko (Mass)
suszeptibilitate magnetiko (Molar)
suszeptibilitate magnetiko (Volume)
magnetic ordering
Curieren tenperatura
Néel temperature
egitura
Crystal Structure	Simple Orthorhombic (ORC)
lattice constant	4,72 Å
Lattice Angles	π/2, π/2, π/2
materialen propietate mekaniko
Gogortasun
konprimagarritasun-modulu
Zizaila modulua
Youngen modulu
Poissonen modulu
Soinuaren lastertasun
classification
Category	Actinides, Actinides
CAS Group
IUPAC Group
Glawe Number	37
Mendeleev Number	22
Pettifor Number	44
Geochemical Class
Goldschmidt classification	synthetic

beste batzuk

Gas Basicity
polarizability	151 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section	180
Neutron Mass Absorption
zenbaki kuantiko	6L11/2
talde espazial	62 (Pnma)

Isotopes of Neptunium

Stable Isotopes	0
Unstable Isotopes	27
Natural Isotopes	0

²¹⁹Np

masa-zenbaki	219
neutron number	126
Atomo-Masa Erlatibo	219,031601865 ± 0,000098732 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	570 ± 450 us
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	2015
parity	-

decay mode	intensity
α (α emission)	100%

²²⁰Np

masa-zenbaki	220
neutron number	127
Atomo-Masa Erlatibo	220,03271628 ± 0,000032977 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	29 ± 11 ns
spin	1
nuclear quadrupole moment
aurkikuntza-data	2019
parity	-

decay mode	intensity
α (α emission)	100%

²²¹Np

masa-zenbaki	221
neutron number	128
Atomo-Masa Erlatibo	221,03211 ± 0,000215 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	9/2
nuclear quadrupole moment
aurkikuntza-data
parity	-

decay mode	intensity
α (α emission)

²²²Np

masa-zenbaki	222
neutron number	129
Atomo-Masa Erlatibo	222,033574706 ± 0,000040849 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	480 ± 190 ns
spin	1
nuclear quadrupole moment
aurkikuntza-data	2020
parity	-

decay mode	intensity
α (α emission)	100%

²²³Np

masa-zenbaki	223
neutron number	130
Atomo-Masa Erlatibo	223,03291334 ± 0,000088956 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,5 ± 0,8 us
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	2017
parity	-

decay mode	intensity
α (α emission)	100%

²²⁴Np

masa-zenbaki	224
neutron number	131
Atomo-Masa Erlatibo	224,03438803 ± 0,000031052 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	48 ± 19 us
spin	2
nuclear quadrupole moment
aurkikuntza-data	2018
parity	-

decay mode	intensity
α (α emission)	100%

²²⁵Np

masa-zenbaki	225
neutron number	132
Atomo-Masa Erlatibo	225,033943422 ± 0,000098355 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	6,5 ± 3,5 ms
spin	9/2
nuclear quadrupole moment
aurkikuntza-data	1994
parity	-

decay mode	intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²²⁶Np

masa-zenbaki	226
neutron number	133
Atomo-Masa Erlatibo	226,035230364 ± 0,000109568 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	35 ± 10 ms
spin
nuclear quadrupole moment
aurkikuntza-data	1990
parity

decay mode	intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²²⁷Np

masa-zenbaki	227
neutron number	134
Atomo-Masa Erlatibo	227,034975012 ± 0,000082651 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	510 ± 60 ms
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1990
parity	+

decay mode	intensity
α (α emission)	100%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²²⁸Np

masa-zenbaki	228
neutron number	135
Atomo-Masa Erlatibo	228,036313 ± 0,000108 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	61,4 ± 1,4 s
spin	4
nuclear quadrupole moment
aurkikuntza-data	1994
parity	+

decay mode	intensity
ϵ (electron capture)	59%
α (α emission)	41%
β⁺ SF (β⁺-delayed fission)	0.012%

²²⁹Np

masa-zenbaki	229
neutron number	136
Atomo-Masa Erlatibo	229,036287269 ± 0,000108618 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4 ± 0,18 m
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1968
parity	+

decay mode	intensity
α (α emission)	68%
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

²³⁰Np

masa-zenbaki	230
neutron number	137
Atomo-Masa Erlatibo	230,03782806 ± 0,000059051 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4,6 ± 0,3 m
spin	4
nuclear quadrupole moment
aurkikuntza-data	1968
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	97%
α (α emission)	3%

²³¹Np

masa-zenbaki	231
neutron number	138
Atomo-Masa Erlatibo	231,038243598 ± 0,000054916 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	48,8 ± 0,2 m
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1950
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	98%
α (α emission)	2%

²³²Np

masa-zenbaki	232
neutron number	139
Atomo-Masa Erlatibo	232,040107 ± 0,000107 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	14,7 ± 0,3 m
spin	5
nuclear quadrupole moment
aurkikuntza-data	1950
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)

²³³Np

masa-zenbaki	233
neutron number	140
Atomo-Masa Erlatibo	233,040739421 ± 0,000054729 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	36,2 ± 0,1 m
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1950
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
α (α emission)	0.0007%

²³⁴Np

masa-zenbaki	234
neutron number	141
Atomo-Masa Erlatibo	234,042893245 ± 0,000009014 Da
g-factor	0
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	4,4 ± 0,1 d
spin	0
nuclear quadrupole moment	0
aurkikuntza-data	1949
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

²³⁵Np

masa-zenbaki	235
neutron number	142
Atomo-Masa Erlatibo	235,044061518 ± 0,00000149 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	396,1 ± 1,2 d
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1949
parity	+

decay mode	intensity
ϵ (electron capture)	99.9974%
α (α emission)	0.0026%

²³⁶Np

masa-zenbaki	236
neutron number	143
Atomo-Masa Erlatibo	236,046568296 ± 0,000054129 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	153 ± 5 ky
spin	6
nuclear quadrupole moment
aurkikuntza-data	1949
parity	-

decay mode	intensity
ϵ (electron capture)	86.3%
β⁻ (β⁻ decay)	13.5%
α (α emission)	0.16%

²³⁷Np

masa-zenbaki	237
neutron number	144
Atomo-Masa Erlatibo	237,04817164 ± 0,000001201 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,144 ± 0,007 My
spin	5/2
nuclear quadrupole moment	3,886 ± 0,006
aurkikuntza-data	1948
parity	+

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	2%
30Mg	4%

²³⁸Np

masa-zenbaki	238
neutron number	145
Atomo-Masa Erlatibo	238,050944603 ± 0,00000122 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,099 ± 0,002 d
spin	2
nuclear quadrupole moment
aurkikuntza-data	1949
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²³⁹Np

masa-zenbaki	239
neutron number	146
Atomo-Masa Erlatibo	239,052937538 ± 0,000001406 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,356 ± 0,003 d
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1940
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
α (α emission)

²⁴⁰Np

masa-zenbaki	240
neutron number	147
Atomo-Masa Erlatibo	240,056163778 ± 0,000018284 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	61,9 ± 0,2 m
spin	5
nuclear quadrupole moment
aurkikuntza-data	1953
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁴¹Np

masa-zenbaki	241
neutron number	148
Atomo-Masa Erlatibo	241,058309671 ± 0,00010736 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	13,9 ± 0,2 m
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1959
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
α (α emission)

²⁴²Np

masa-zenbaki	242
neutron number	149
Atomo-Masa Erlatibo	242,061639548 ± 0,000214712 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,2 ± 0,2 m
spin	1
nuclear quadrupole moment
aurkikuntza-data	1979
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁴³Np

masa-zenbaki	243
neutron number	150
Atomo-Masa Erlatibo	243,064204 ± 0,000034 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	1,85 ± 0,15 m
spin	5/2
nuclear quadrupole moment
aurkikuntza-data	1979
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁴⁴Np

masa-zenbaki	244
neutron number	151
Atomo-Masa Erlatibo	244,067891 ± 0,000107 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo	2,29 ± 0,16 m
spin	7
nuclear quadrupole moment
aurkikuntza-data	1987
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁴⁵Np

masa-zenbaki	245
neutron number	152
Atomo-Masa Erlatibo	245,070693 ± 0,000215 Da
g-factor
natural abundance
desintegrazio erradioaktibo	☢️ radioactive element
Semidesintegrazio-periodo
spin	5/2
nuclear quadrupole moment
aurkikuntza-data
parity	+

decay mode	intensity
β⁻ (β⁻ decay)

historia

aurkitzailea edo asmatzailea	E.M. McMillan, P.H. Abelson
aurkikuntzaren lekua	United States
aurkikuntza-data	1940
etimologia	Named for the planet Neptune.
pronunciation	nep-TOO-ni-em (ingelesa)

source

Abundance
Abundance in Earth's crust
natural abundance (ozeano)
natural abundance (gizakiaren gorputza)	0 %
natural abundance (Meteoroide)	0 %
natural abundance (Eguzkia)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Neptunioa on ChemicalAid

Australian Educational Vocabulary ID	scot/3547
CAB ID	7537
CAS zenbakia	7439-99-8
ChEBI-ren identifikatzailea	33387
ChemSpider-ren identifikatzailea	22375
DSSTOX compound identifier	DTXCID3047639
DSSTox substance ID	DTXSID5074840
Den Store Danske ID	neptunium
ECHA Substance Infocard ID	100.028.280
Elhuyar ZTH ID	028601
Encyclopædia Britannica Online-ren identifikatzailea	science/neptunium
Encyclopædia Universalis ID	neptunium
Freebase-ren identifikadorea	/m/025s4ry
French Vikidia ID	Neptunium
GND identifikadorea	4171471-4
Great Russian Encyclopedia Online ID	2262013
InChI	InChI=1S/Np
InChIKey	LFNLGNPSGWYGGD-UHFFFAOYSA-N
KBpedia ID	Neptunium
LCCN	sh85090879
MeSH identifikadorea	D009405
Namuwiki ID	넵투늄
National Library of Israel J9U ID	987007565628105171
OmegaWikiren esanahiaren definizioa	377199
OpenAlex ID	C516372188
PubChem-en identifikatzailea	23933
Quora gaiaren identifikadorea	Neptunium
Römpp online ID	RD-14-00817
Store norske leksikon ID	neptunium
Treccani ID	nettunio
UNII	6200K977BQ
USGS Thesaurus ID	1518
WordNet 3.1 Synset ID	14670581-n
YSO ID	12863

Neptunioa (Np)

Propietate Fisiko

Magnitude Fisiko

beste batzuk

Isotopes of Neptunium

219Np

220Np

221Np

222Np

223Np

224Np

225Np

226Np

227Np

228Np

229Np

230Np

231Np

232Np

233Np

234Np

235Np

236Np

237Np

238Np

239Np

240Np

241Np

242Np

243Np

244Np

245Np

historia

source

Nuclear Screening Constants

²¹⁹Np

²²⁰Np

²²¹Np

²²²Np

²²³Np

²²⁴Np

²²⁵Np

²²⁶Np

²²⁷Np

²²⁸Np

²²⁹Np

²³⁰Np

²³¹Np

²³²Np

²³³Np

²³⁴Np

²³⁵Np

²³⁶Np

²³⁷Np

²³⁸Np

²³⁹Np

²⁴⁰Np

²⁴¹Np

²⁴²Np

²⁴³Np

²⁴⁴Np

²⁴⁵Np