Neptunij[um]

Neptunij[um] (Np)

hemijski element sa simbolom Np i atomskim brojem 93
Atomic Number93
Atomic Weight237
Maseni broj219
Group
Period7
Blockf
Proton93 p+
Neutron126 n0
Elektron93 e-
Animated Bohrov model atoma of Np (Neptunij[um])

Physical Property

Atomski Radijus
175 pm
Molarni volumen
covalent radius
171 pm
Metallic Radius
Ionski radijus
110 pm
Crystal Radius
124 pm
Van der Waalsov radijus
239 pm
gustoća
20,2 g/cm³
Atomic Radii Of The Elements: Neptunij[um]0102030405060708090100110120130140150160170180190200210220230240pmAtomski RadijusCovalent RadiusMetallic RadiusVan der Waalsov radijus

Chemical Property

energija
proton affinity
electron affinity
ionization energy
ionization energy of Np (Neptunij[um])
Toplota isparavanja
336 kJ/mol
toplota topljenja
9,6 kJ/mol
standard enthalpy of formation
464,8 kJ/mol
Elektron
electron shell2, 8, 18, 32, 22, 9, 2
Bohrov model atoma: Np (Neptunij[um])
Valentni elektron2
Lewis structure: Np (Neptunij[um])
electron configuration[Rn] 5f4 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f4 6d1 7s2
Enhanced Bohrov model atoma of Np (Neptunij[um])
Orbital Diagram of Np (Neptunij[um])
oksidacijsko stanje2, 3, 4, 5, 6, 7
Elektronegativnost
1.3
Electrophilicity Index
fundamental state of matter
agregatno stanjeSolid
gaseous state of matter
Boiling Point
Melting Point
917,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja
Silver
appearancesilvery metallic
Indeks prelamanja
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
Specifična električna provodljivost
0,83 MS/m
electrical resistivity
0,0000012 m Ω
Superprovodljivost
Magnetizam
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal StructureSimple Orthorhombic (ORC)
lattice constant
4,72 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
Tvrdoća
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Brzina zvuka
klasifikacija
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number37
Mendeleev Number22
Pettifor Number44
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
151 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
180
Neutron Mass Absorption
Kvantni brojevi6L11/2
space group62 (Pnma)

Isotopes of Neptunium

Stable Isotopes0
Unstable Isotopes27
Natural Isotopes0

219Np

Maseni broj219
broj neutrona126
relative atomic mass
219,031601865 ± 0,000098732 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
570 ± 450 us
spin9/2
nuclear quadrupole moment
datum otkrića2015
parity-

decay modeintensity
α (α emission)100%

220Np

Maseni broj220
broj neutrona127
relative atomic mass
220,03271628 ± 0,000032977 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
29 ± 11 ns
spin1
nuclear quadrupole moment
datum otkrića2019
parity-

decay modeintensity
α (α emission)100%

221Np

Maseni broj221
broj neutrona128
relative atomic mass
221,03211 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin9/2
nuclear quadrupole moment
datum otkrića
parity-

decay modeintensity
α (α emission)

222Np

Maseni broj222
broj neutrona129
relative atomic mass
222,033574706 ± 0,000040849 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
480 ± 190 ns
spin1
nuclear quadrupole moment
datum otkrića2020
parity-

decay modeintensity
α (α emission)100%

223Np

Maseni broj223
broj neutrona130
relative atomic mass
223,03291334 ± 0,000088956 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,5 ± 0,8 us
spin9/2
nuclear quadrupole moment
datum otkrića2017
parity-

decay modeintensity
α (α emission)100%

224Np

Maseni broj224
broj neutrona131
relative atomic mass
224,03438803 ± 0,000031052 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
48 ± 19 us
spin2
nuclear quadrupole moment
datum otkrića2018
parity-

decay modeintensity
α (α emission)100%

225Np

Maseni broj225
broj neutrona132
relative atomic mass
225,033943422 ± 0,000098355 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
6,5 ± 3,5 ms
spin9/2
nuclear quadrupole moment
datum otkrića1994
parity-

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

226Np

Maseni broj226
broj neutrona133
relative atomic mass
226,035230364 ± 0,000109568 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
35 ± 10 ms
spin
nuclear quadrupole moment
datum otkrića1990
parity

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

227Np

Maseni broj227
broj neutrona134
relative atomic mass
227,034975012 ± 0,000082651 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
510 ± 60 ms
spin5/2
nuclear quadrupole moment
datum otkrića1990
parity+

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

228Np

Maseni broj228
broj neutrona135
relative atomic mass
228,036313 ± 0,000108 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
61,4 ± 1,4 s
spin4
nuclear quadrupole moment
datum otkrića1994
parity+

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

229Np

Maseni broj229
broj neutrona136
relative atomic mass
229,036287269 ± 0,000108618 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4 ± 0,18 m
spin5/2
nuclear quadrupole moment
datum otkrića1968
parity+

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

230Np

Maseni broj230
broj neutrona137
relative atomic mass
230,03782806 ± 0,000059051 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,6 ± 0,3 m
spin4
nuclear quadrupole moment
datum otkrića1968
parity+

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

231Np

Maseni broj231
broj neutrona138
relative atomic mass
231,038243598 ± 0,000054916 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
48,8 ± 0,2 m
spin5/2
nuclear quadrupole moment
datum otkrića1950
parity+

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

232Np

Maseni broj232
broj neutrona139
relative atomic mass
232,040107 ± 0,000107 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
14,7 ± 0,3 m
spin5
nuclear quadrupole moment
datum otkrića1950
parity-

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

233Np

Maseni broj233
broj neutrona140
relative atomic mass
233,040739421 ± 0,000054729 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
36,2 ± 0,1 m
spin5/2
nuclear quadrupole moment
datum otkrića1950
parity+

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

234Np

Maseni broj234
broj neutrona141
relative atomic mass
234,042893245 ± 0,000009014 Da
g-factor
0
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
4,4 ± 0,1 d
spin0
nuclear quadrupole moment
0
datum otkrića1949
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

235Np

Maseni broj235
broj neutrona142
relative atomic mass
235,044061518 ± 0,00000149 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
396,1 ± 1,2 d
spin5/2
nuclear quadrupole moment
datum otkrića1949
parity+

decay modeintensity
ϵ (electron capture)99.9974%
α (α emission)0.0026%

236Np

Maseni broj236
broj neutrona143
relative atomic mass
236,046568296 ± 0,000054129 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
153 ± 5 ky
spin6
nuclear quadrupole moment
datum otkrića1949
parity-

decay modeintensity
ϵ (electron capture)86.3%
β (β decay)13.5%
α (α emission)0.16%

237Np

Maseni broj237
broj neutrona144
relative atomic mass
237,04817164 ± 0,000001201 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,144 ± 0,007 My
spin5/2
nuclear quadrupole moment
3,886 ± 0,006
datum otkrića1948
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)2%
30Mg4%

238Np

Maseni broj238
broj neutrona145
relative atomic mass
238,050944603 ± 0,00000122 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,099 ± 0,002 d
spin2
nuclear quadrupole moment
datum otkrića1949
parity+

decay modeintensity
β (β decay)100%

239Np

Maseni broj239
broj neutrona146
relative atomic mass
239,052937538 ± 0,000001406 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,356 ± 0,003 d
spin5/2
nuclear quadrupole moment
datum otkrića1940
parity+

decay modeintensity
β (β decay)100%
α (α emission)

240Np

Maseni broj240
broj neutrona147
relative atomic mass
240,056163778 ± 0,000018284 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
61,9 ± 0,2 m
spin5
nuclear quadrupole moment
datum otkrića1953
parity+

decay modeintensity
β (β decay)100%

241Np

Maseni broj241
broj neutrona148
relative atomic mass
241,058309671 ± 0,00010736 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
13,9 ± 0,2 m
spin5/2
nuclear quadrupole moment
datum otkrića1959
parity+

decay modeintensity
β (β decay)100%
α (α emission)

242Np

Maseni broj242
broj neutrona149
relative atomic mass
242,061639548 ± 0,000214712 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,2 ± 0,2 m
spin1
nuclear quadrupole moment
datum otkrića1979
parity+

decay modeintensity
β (β decay)100%

243Np

Maseni broj243
broj neutrona150
relative atomic mass
243,064204 ± 0,000034 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
1,85 ± 0,15 m
spin5/2
nuclear quadrupole moment
datum otkrića1979
parity+

decay modeintensity
β (β decay)100%

244Np

Maseni broj244
broj neutrona151
relative atomic mass
244,067891 ± 0,000107 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
2,29 ± 0,16 m
spin7
nuclear quadrupole moment
datum otkrića1987
parity-

decay modeintensity
β (β decay)100%

245Np

Maseni broj245
broj neutrona152
relative atomic mass
245,070693 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost☢️ radioactive element
Vrijeme poluraspada
spin5/2
nuclear quadrupole moment
datum otkrića
parity+

decay modeintensity
β (β decay)
Neptunium2

historija

otkrivač ili izumiteljE.M. McMillan, P.H. Abelson
mjesto otkrićaUnited States
datum otkrića1940
EtimologijaNamed for the planet Neptune.
pronunciationnep-TOO-ni-em (engleski)

izvor

Abundance
Abundance in Earth's crust
natural abundance (okean)
natural abundance (ljudsko tijelo)
0 %
natural abundance (Meteoroidi)
0 %
natural abundance (Sunce)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants