Neptünyûm

Neptünyûm (Np)

chemical element with the atomic number of 93 and symbol Np
Atomic Number93
Atomic Weight237
Hejmara baristeyî219
Group
Period7
Blockf
Proton93 p+
Notron126 n0
Kareva93 e-
Animated Bohr model of Np (Neptünyûm)

Physical Property

Atomic Radius
175 pm
molar volume
Covalent Radius
171 pm
Metallic Radius
ionic radius
110 pm
Crystal Radius
124 pm
Van der Waals radius
239 pm
density
20,2 g/cm³
Atomic Radii Of The Elements: Neptünyûm0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
ionization energy
ionization energy of Np (Neptünyûm)
enthalpy of vaporization
336 kJ/mol
enthalpy of fusion
9,6 kJ/mol
standard enthalpy of formation
464,8 kJ/mol
Kareva
electron shell2, 8, 18, 32, 22, 9, 2
Bohr model: Np (Neptünyûm)
valence electron2
Lewis structure: Np (Neptünyûm)
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 Bohr model of Np (Neptünyûm)
Orbital Diagram of Np (Neptünyûm)
oxidation number2, 3, 4, 5, 6, 7
electronegativity
1.3
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
917,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearancesilvery metallic
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
0,83 MS/m
electrical resistivity
0,0000012 m Ω
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureSimple Orthorhombic (ORC)
lattice constant
4,72 Å
Lattice Anglesπ/2, π/2, π/2
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Leza dengê
classification
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
quantum number6L11/2
space group62 (Pnma)

Isotopes of Neptunium

Stable Isotopes0
Unstable Isotopes27
Natural Isotopes0

219Np

Hejmara baristeyî219
neutron number126
Giraniya atomê
219,031601865 ± 0,000098732 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
570 ± 450 us
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2015
parity-

decay modeintensity
α (α emission)100%

220Np

Hejmara baristeyî220
neutron number127
Giraniya atomê
220,03271628 ± 0,000032977 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
29 ± 11 ns
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê2019
parity-

decay modeintensity
α (α emission)100%

221Np

Hejmara baristeyî221
neutron number128
Giraniya atomê
221,03211 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

decay modeintensity
α (α emission)

222Np

Hejmara baristeyî222
neutron number129
Giraniya atomê
222,033574706 ± 0,000040849 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
480 ± 190 ns
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê2020
parity-

decay modeintensity
α (α emission)100%

223Np

Hejmara baristeyî223
neutron number130
Giraniya atomê
223,03291334 ± 0,000088956 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,5 ± 0,8 us
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity-

decay modeintensity
α (α emission)100%

224Np

Hejmara baristeyî224
neutron number131
Giraniya atomê
224,03438803 ± 0,000031052 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
48 ± 19 us
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2018
parity-

decay modeintensity
α (α emission)100%

225Np

Hejmara baristeyî225
neutron number132
Giraniya atomê
225,033943422 ± 0,000098355 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,5 ± 3,5 ms
spin9/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1994
parity-

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

226Np

Hejmara baristeyî226
neutron number133
Giraniya atomê
226,035230364 ± 0,000109568 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
35 ± 10 ms
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê1990
parity

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

227Np

Hejmara baristeyî227
neutron number134
Giraniya atomê
227,034975012 ± 0,000082651 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
510 ± 60 ms
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1990
parity+

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

228Np

Hejmara baristeyî228
neutron number135
Giraniya atomê
228,036313 ± 0,000108 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
61,4 ± 1,4 s
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1994
parity+

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

229Np

Hejmara baristeyî229
neutron number136
Giraniya atomê
229,036287269 ± 0,000108618 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4 ± 0,18 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1968
parity+

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

230Np

Hejmara baristeyî230
neutron number137
Giraniya atomê
230,03782806 ± 0,000059051 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,6 ± 0,3 m
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1968
parity+

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

231Np

Hejmara baristeyî231
neutron number138
Giraniya atomê
231,038243598 ± 0,000054916 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
48,8 ± 0,2 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity+

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

232Np

Hejmara baristeyî232
neutron number139
Giraniya atomê
232,040107 ± 0,000107 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
14,7 ± 0,3 m
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity-

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

233Np

Hejmara baristeyî233
neutron number140
Giraniya atomê
233,040739421 ± 0,000054729 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
36,2 ± 0,1 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity+

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

234Np

Hejmara baristeyî234
neutron number141
Giraniya atomê
234,042893245 ± 0,000009014 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4,4 ± 0,1 d
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1949
parity+

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

235Np

Hejmara baristeyî235
neutron number142
Giraniya atomê
235,044061518 ± 0,00000149 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
396,1 ± 1,2 d
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1949
parity+

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

236Np

Hejmara baristeyî236
neutron number143
Giraniya atomê
236,046568296 ± 0,000054129 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
153 ± 5 ky
spin6
nuclear quadrupole moment
dema îcadkirinê yan keşfê1949
parity-

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

237Np

Hejmara baristeyî237
neutron number144
Giraniya atomê
237,04817164 ± 0,000001201 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,144 ± 0,007 My
spin5/2
nuclear quadrupole moment
3,886 ± 0,006
dema îcadkirinê yan keşfê1948
parity+

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

238Np

Hejmara baristeyî238
neutron number145
Giraniya atomê
238,050944603 ± 0,00000122 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,099 ± 0,002 d
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1949
parity+

decay modeintensity
β (β decay)100%

239Np

Hejmara baristeyî239
neutron number146
Giraniya atomê
239,052937538 ± 0,000001406 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,356 ± 0,003 d
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1940
parity+

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

240Np

Hejmara baristeyî240
neutron number147
Giraniya atomê
240,056163778 ± 0,000018284 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
61,9 ± 0,2 m
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1953
parity+

decay modeintensity
β (β decay)100%

241Np

Hejmara baristeyî241
neutron number148
Giraniya atomê
241,058309671 ± 0,00010736 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
13,9 ± 0,2 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1959
parity+

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

242Np

Hejmara baristeyî242
neutron number149
Giraniya atomê
242,061639548 ± 0,000214712 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,2 ± 0,2 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1979
parity+

decay modeintensity
β (β decay)100%

243Np

Hejmara baristeyî243
neutron number150
Giraniya atomê
243,064204 ± 0,000034 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,85 ± 0,15 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1979
parity+

decay modeintensity
β (β decay)100%

244Np

Hejmara baristeyî244
neutron number151
Giraniya atomê
244,067891 ± 0,000107 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,29 ± 0,16 m
spin7
nuclear quadrupole moment
dema îcadkirinê yan keşfê1987
parity-

decay modeintensity
β (β decay)100%

245Np

Hejmara baristeyî245
neutron number152
Giraniya atomê
245,070693 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity+

decay modeintensity
β (β decay)
Neptunium2

dîrok

kaşîf an îcadkerE.M. McMillan, P.H. Abelson
location of discoveryUnited States
dema îcadkirinê yan keşfê1940
BêjenasîNamed for the planet Neptune.
pronunciationnep-TOO-ni-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
natural abundance (human body)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Roj)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants