Lawrencium

Lawrencium (Lr)

chemical element with the atomic number of 103
Atomic Number103
Atomic Weight262
mass number251
Group
Period7
Blockf
proton103 p+
neutron148 n0
electron103 e-
Animated Bohr model of Lr (Lawrencium)

Āhuatanga Ōkiko

Atomic Radius
molar volume
covalent radius
161 pm
Metallic Radius
ionic radius
107.4 pm
Crystal Radius
121.4 pm
Van der Waals radius
246 pm
density
15.6 g/cm³

Chemical Property

energy
proton affinity
electron affinity
ionization energy
ionization energy of Lr (Lawrencium)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
electron
electron shell2, 8, 18, 32, 32, 8, 3
Bohr model: Lr (Lawrencium)
valence electron2
Lewis structure: Lr (Lawrencium)
electron configuration[Rn] 5f14 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f14 6d1 7s2
Enhanced Bohr model of Lr (Lawrencium)
Orbital Diagram of Lr (Lawrencium)
oxidation number3
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1,900.15 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, Transition metals
CAS Group
IUPAC Group
Glawe Number47
Mendeleev Number42
Pettifor Number34
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
320 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number2P1/2
space group ()

Isotopes of Lawrencium

Stable Isotopes0
Unstable Isotopes16
Natural Isotopes0

251Lr

mass number251
neutron number148
relative atomic mass
251.094289 ± 0.000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

252Lr

mass number252
neutron number149
relative atomic mass
252.095048 ± 0.000198 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
369 ± 75 ms
spin7
nuclear quadrupole moment
time of discovery or invention2001
parity-

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

253Lr

mass number253
neutron number150
relative atomic mass
253.09503385 ± 0.000176634 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
632 ± 46 ms
spin7/2
nuclear quadrupole moment
time of discovery or invention1985
parity-

decay modeintensity
α (α emission)90%
SF (spontaneous fission)1%
β+ (β+ decay; β+ = ϵ + e+)

254Lr

mass number254
neutron number151
relative atomic mass
254.096238813 ± 0.000098026 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
12 ± 0.9 s
spin4
nuclear quadrupole moment
time of discovery or invention1981
parity+

decay modeintensity
α (α emission)71.7%
β+ (β+ decay; β+ = ϵ + e+)28.3%
SF (spontaneous fission)0.1%

255Lr

mass number255
neutron number152
relative atomic mass
255.096562399 ± 0.000019 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
31.1 ± 1.1 s
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1971
parity-

decay modeintensity
α (α emission)99.7%
β+ (β+ decay; β+ = ϵ + e+)0.3%
SF (spontaneous fission)

256Lr

mass number256
neutron number153
relative atomic mass
256.098494024 ± 0.000089 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
27.9 ± 1 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1965
parity-

decay modeintensity
α (α emission)85%
β+ (β+ decay; β+ = ϵ + e+)15%
SF (spontaneous fission)0.03%

257Lr

mass number257
neutron number154
relative atomic mass
257.09948 ± 0.000047 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6 ± 0.4 s
spin7/2
nuclear quadrupole moment
time of discovery or invention1971
parity-

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

258Lr

mass number258
neutron number155
relative atomic mass
258.101753 ± 0.000109 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.92 ± 0.33 s
spin
nuclear quadrupole moment
time of discovery or invention1971
parity

decay modeintensity
α (α emission)97.4%
β+ (β+ decay; β+ = ϵ + e+)2.6%

259Lr

mass number259
neutron number156
relative atomic mass
259.1029 ± 0.000076 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6.2 ± 0.3 s
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1971
parity-

decay modeintensity
α (α emission)78%
SF (spontaneous fission)22%
β+ (β+ decay; β+ = ϵ + e+)

260Lr

mass number260
neutron number157
relative atomic mass
260.105504 ± 0.000134 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3 ± 0.5 m
spin
nuclear quadrupole moment
time of discovery or invention1971
parity

decay modeintensity
α (α emission)80%
β+ (β+ decay; β+ = ϵ + e+)20%

261Lr

mass number261
neutron number158
relative atomic mass
261.106879 ± 0.000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
39 ± 12 m
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1987
parity-

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

262Lr

mass number262
neutron number159
relative atomic mass
262.109615 ± 0.000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention1987
parity

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

263Lr

mass number263
neutron number160
relative atomic mass
263.111293 ± 0.00024 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
time of discovery or invention
parity-

decay modeintensity
α (α emission)

264Lr

mass number264
neutron number161
relative atomic mass
264.114198 ± 0.000468 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)

265Lr

mass number265
neutron number162
relative atomic mass
265.116193 ± 0.000587 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
time of discovery or invention
parity-

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

266Lr

mass number266
neutron number163
relative atomic mass
266.119874 ± 0.000579 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
22 ± 14 h
spin
nuclear quadrupole moment
time of discovery or invention2014
parity

decay modeintensity
SF (spontaneous fission)100%
Electron shell 103 Lawrencium

kōrero nehe

discoverer or inventorA.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
location of discoveryUnited States
time of discovery or invention1961
etymologyNamed in honor of Ernest O. Lawrence, inventor of the cyclotron.
pronunciationlor-ENS-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