Nobelium

Nobelium (No)

chemical element with the atomic number of 102 and symbol No
Atomic Number102
Atomic Weight259
mass number248
Group
Period7
Blockf
proton102 p+
neutron146 n0
electron102 e-
Animated Bohr model of No (Nobelium)

Āhuatanga Ōkiko

Atomic Radius
molar volume
covalent radius
176 pm
Metallic Radius
ionic radius
110 pm
Crystal Radius
124 pm
Van der Waals radius
246 pm
density
9.9 g/cm³

Chemical Property

energy
proton affinity
electron affinity
ionization energy
ionization energy of No (Nobelium)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
electron
electron shell2, 8, 18, 32, 32, 8, 2
Bohr model: No (Nobelium)
valence electron2
Lewis structure: No (Nobelium)
electron configuration[Rn] 5f14 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f14 7s2
Enhanced Bohr model of No (Nobelium)
Orbital Diagram of No (Nobelium)
oxidation number2, 3
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1,100.15 K
critical pressure
critical temperature
triple point
appearance
color
Colorless
appearance
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
electrical conductivity
electrical resistivity
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure ()
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number46
Mendeleev Number40
Pettifor Number35
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
110 ± 6 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number1S0
space group ()

Isotopes of Nobelium

Stable Isotopes0
Unstable Isotopes17
Natural Isotopes0

248No

mass number248
neutron number146
relative atomic mass
248.086623 ± 0.000241 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention2003
parity+

decay modeintensity
SF (spontaneous fission)

249No

mass number249
neutron number147
relative atomic mass
249.087802 ± 0.0003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
57 ± 12 us
spin5/2
nuclear quadrupole moment
time of discovery or invention2003
parity+

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

250No

mass number250
neutron number148
relative atomic mass
250.087565 ± 0.000215 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
5.08 ± 0.27 us
spin0
nuclear quadrupole moment
0
time of discovery or invention2003
parity+

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

251No

mass number251
neutron number149
relative atomic mass
251.088942 ± 0.000194 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
800 ± 10 ms
spin7/2
nuclear quadrupole moment
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)83%
β+ (β+ decay; β+ = ϵ + e+)
SF (spontaneous fission)0.3%

252No

mass number252
neutron number150
relative atomic mass
252.08896607 ± 0.000009975 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2.467 ± 0.016 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)67.6%
SF (spontaneous fission)31.3%
β+ (β+ decay; β+ = ϵ + e+)1.1%

253No

mass number253
neutron number151
relative atomic mass
253.09056278 ± 0.00000742 Da
g-factor
-0.11777777777778 ± 0.017777777777778
natural abundance
radioactivity☢️ radioactive element
half-life
1.57 ± 0.02 m
spin9/2
nuclear quadrupole moment
5.9 ± 1.7
time of discovery or invention1967
parity-

decay modeintensity
α (α emission)55%
β+ (β+ decay; β+ = ϵ + e+)
SF (spontaneous fission)

254No

mass number254
neutron number152
relative atomic mass
254.090954211 ± 0.000010367 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
51.2 ± 0.4 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1966
parity+

decay modeintensity
α (α emission)90%
β+ (β+ decay; β+ = ϵ + e+)10%
SF (spontaneous fission)0.17%

255No

mass number255
neutron number153
relative atomic mass
255.093196439 ± 0.000015079 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.52 ± 0.18 m
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1967
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)70%
α (α emission)30%

256No

mass number256
neutron number154
relative atomic mass
256.094281912 ± 0.000008103 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
2.91 ± 0.05 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1963
parity+

decay modeintensity
α (α emission)99.45%
SF (spontaneous fission)0.55%
ϵ (electron capture)

257No

mass number257
neutron number155
relative atomic mass
257.096884203 ± 0.000006652 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
24.5 ± 0.5 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1967
parity+

decay modeintensity
α (α emission)85%
β+ (β+ decay; β+ = ϵ + e+)15%
SF (spontaneous fission)

258No

mass number258
neutron number156
relative atomic mass
258.098205 ± 0.000107 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
1.23 ± 0.12 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1989
parity+

decay modeintensity
SF (spontaneous fission)100%
α (α emission)

259No

mass number259
neutron number157
relative atomic mass
259.100998364 ± 0.000006829 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
58 ± 5 m
spin9/2
nuclear quadrupole moment
time of discovery or invention1973
parity+

decay modeintensity
α (α emission)75%
ϵ (electron capture)25%
SF (spontaneous fission)10%

260No

mass number260
neutron number158
relative atomic mass
260.102641 ± 0.000215 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
106 ± 8 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1985
parity+

decay modeintensity
SF (spontaneous fission)100%

261No

mass number261
neutron number159
relative atomic mass
261.105696 ± 0.000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

decay modeintensity
α (α emission)

262No

mass number262
neutron number160
relative atomic mass
262.107463 ± 0.000387 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention1988
parity+

decay modeintensity
SF (spontaneous fission)100%
α (α emission)

263No

mass number263
neutron number161
relative atomic mass
263.110714 ± 0.000526 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

decay modeintensity
α (α emission)
SF (spontaneous fission)

264No

mass number264
neutron number162
relative atomic mass
264.112734 ± 0.000634 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention
parity+

decay modeintensity
α (α emission)
SF (spontaneous fission)
Electron shell 102 Nobelium

kōrero nehe

discoverer or inventorNobel Institute for Physics
location of discoverySweden
time of discovery or invention1957
etymologyNamed in honor of Alfred Nobel, who invented dynamite and founded Nobel prize.
pronunciationno-BELL-i-em (Ingarihi)

source

Abundance
Abundance in Earth's crust
natural abundance (Moana nui)
natural abundance (human body)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Te Rā)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants