Laurenci

Laurenci (Lr)

chemical element with the atomic number of 103
Atomic Number103
Atomic Weight262
Rhif màs251
Group
Period7
Blockf
Proton103 p+
Niwtron148 n0
Electron103 e-
Animated Bohr model of Lr (Laurenci)

Nodwedd Ffisegol

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

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
ionization energy of Lr (Laurenci)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Electron
plisgyn yr electron2, 8, 18, 32, 32, 8, 3
Bohr model: Lr (Laurenci)
valence electron2
Lewis structure: Lr (Laurenci)
trefn yr electronnau[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 (Laurenci)
Orbital Diagram of Lr (Laurenci)
Cyflwr ocsidiad3
Electronegatifedd
Electrophilicity Index
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
Melting Point
1,900.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Colorless
appearance
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
dargludedd trydanol
Gwrthedd
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal Structure ()
lattice constant
Lattice Angles
nodwedd mecanyddol deunyddiau
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

Rhif màs251
neutron number148
relative atomic mass
251.094289 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod
parity

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

252Lr

Rhif màs252
neutron number149
relative atomic mass
252.095048 ± 0.000198 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
369 ± 75 ms
spin7
nuclear quadrupole moment
dyddiad darganfod2001
parity-

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

253Lr

Rhif màs253
neutron number150
relative atomic mass
253.09503385 ± 0.000176634 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
632 ± 46 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod1985
parity-

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

254Lr

Rhif màs254
neutron number151
relative atomic mass
254.096238813 ± 0.000098026 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
12 ± 0.9 s
spin4
nuclear quadrupole moment
dyddiad darganfod1981
parity+

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

255Lr

Rhif màs255
neutron number152
relative atomic mass
255.096562399 ± 0.000019 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
31.1 ± 1.1 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1971
parity-

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

256Lr

Rhif màs256
neutron number153
relative atomic mass
256.098494024 ± 0.000089 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
27.9 ± 1 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1965
parity-

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

257Lr

Rhif màs257
neutron number154
relative atomic mass
257.09948 ± 0.000047 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6 ± 0.4 s
spin7/2
nuclear quadrupole moment
dyddiad darganfod1971
parity-

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

258Lr

Rhif màs258
neutron number155
relative atomic mass
258.101753 ± 0.000109 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.92 ± 0.33 s
spin
nuclear quadrupole moment
dyddiad darganfod1971
parity

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

259Lr

Rhif màs259
neutron number156
relative atomic mass
259.1029 ± 0.000076 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.2 ± 0.3 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1971
parity-

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

260Lr

Rhif màs260
neutron number157
relative atomic mass
260.105504 ± 0.000134 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3 ± 0.5 m
spin
nuclear quadrupole moment
dyddiad darganfod1971
parity

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

261Lr

Rhif màs261
neutron number158
relative atomic mass
261.106879 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
39 ± 12 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1987
parity-

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

262Lr

Rhif màs262
neutron number159
relative atomic mass
262.109615 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod1987
parity

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

263Lr

Rhif màs263
neutron number160
relative atomic mass
263.111293 ± 0.00024 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod
parity-

decay modeintensity
α (α emission)

264Lr

Rhif màs264
neutron number161
relative atomic mass
264.114198 ± 0.000468 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod
parity

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

265Lr

Rhif màs265
neutron number162
relative atomic mass
265.116193 ± 0.000587 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod
parity-

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

266Lr

Rhif màs266
neutron number163
relative atomic mass
266.119874 ± 0.000579 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
22 ± 14 h
spin
nuclear quadrupole moment
dyddiad darganfod2014
parity

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

hanes

darganfyddwr neu ddyfeisiwrA.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
man darganfodUnited States
dyddiad darganfod1961
geirdarddiadNamed in honor of Ernest O. Lawrence, inventor of the cyclotron.
ynganiadlor-ENS-i-em (Saesneg)

source

Abundance
Abundance in Earth's crust
natural abundance (cefnfor)
natural abundance (corff dynol)
0 %
natural abundance (Awyrfaen)
0 %
natural abundance (Haul)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants