Lawrencium (Lr)

chemical element with the atomic number of 103

Atomic Number	103
Atomic Weight	262
mass number	251

Group
Period	7
Block	f

proton	103 p⁺
neutron	148 n⁰
electron	103 e^-

Physical Property

Atomic Radius
molar volume
Covalent Radius	161 pm 141 pm
Metallic Radius
ionic radius	107.4 pm
Crystal Radius	121.4 pm
Van der Waals radius	246 pm 323.6 pm
density	15.6 g/cm³

Chemical Property

{ERROR}

energia

proton affinity
electron affinity
ionization energy	4.9 eV/particle 14.3 eV/particle 21.4 eV/particle 43.6 eV/particle 56 eV/particle 80 eV/particle 96 eV/particle 121 eV/particle 143 eV/particle 165 eV/particle 197 eV/particle 216 eV/particle 244 eV/particle 269 eV/particle 290 eV/particle 320 eV/particle 344 eV/particle 374 eV/particle 403 eV/particle 431 eV/particle 460 eV/particle 487 eV/particle 510 eV/particle 540 eV/particle 560 eV/particle 745 eV/particle 779 eV/particle 814 eV/particle 852 eV/particle 888 eV/particle 922 eV/particle 985 eV/particle 1020 eV/particle 1061 eV/particle 1098 eV/particle 1280 eV/particle 1320 eV/particle 1360 eV/particle 1410 eV/particle 1570 eV/particle 1620 eV/particle 1760 eV/particle 1810 eV/particle 2010 eV/particle 2100 eV/particle 2190 eV/particle 2290 eV/particle 2380 eV/particle 2470 eV/particle 2570 eV/particle 2670 eV/particle 2780 eV/particle 2860 eV/particle 2960 eV/particle 3060 eV/particle 3150 eV/particle 3250 eV/particle 3741 eV/particle 3821 eV/particle 3906 eV/particle 3996 eV/particle 4082 eV/particle 4165 eV/particle 4360 eV/particle 4448 eV/particle 4540 eV/particle 4630 eV/particle 4990 eV/particle 5070 eV/particle 5160 eV/particle 5250 eV/particle 5920 eV/particle 6030 eV/particle 6290 eV/particle 6390 eV/particle 9920 eV/particle 10110 eV/particle 10310 eV/particle 10520 eV/particle 10720 eV/particle 10920 eV/particle 11480 eV/particle 11680 eV/particle 11910 eV/particle 12120 eV/particle 12710 eV/particle 12890 eV/particle 13090 eV/particle 13300 eV/particle 15300 eV/particle 15600 eV/particle 16000 eV/particle 16200 eV/particle 32400 eV/particle 32900 eV/particle 33400 eV/particle 33900 eV/particle 41600 eV/particle 42300 eV/particle 43200 eV/particle 43759 eV/particle 172930 eV/particle

enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
electron

Tegimen electronicum	2, 8, 18, 32, 32, 8, 3

valence electron	2 ⓘ

electron configuration	[Rn] 5f¹⁴ 6d¹ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f¹⁴ 6d¹ 7s²

oxidation number	3
electronegativity	0.24844
Electrophilicity Index
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point
Melting Point	1900.15 K
critical pressure
critical temperature
Punctum triplex
appearance
Color	Black #ffffff #c70066 #c70066
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
Superconductrum
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
structure
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
celeritas soni
classificare
Category	Actinides, Transition metals
CAS Group
IUPAC Group
Glawe Number	47
Mendeleev Number	42
Pettifor Number	34
Geochemical Class
Goldschmidt classification	synthetic

other

Gas Basicity
polarizability	320 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
Neutron Mass Absorption
quantum number	2P1/2
space group	()

Isotopes of Lawrencium

Stable Isotopes	0
Unstable Isotopes	16
Natural Isotopes	0

²⁵¹Lr

mass number	251
neutron number	148
Relative Atomic Mass	251.094289 ± 0.000215 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas
nuclear quadrupole moment
repertus
parity

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
α (α emission)

²⁵²Lr

mass number	252
neutron number	149
Relative Atomic Mass	252.095048 ± 0.000198 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	369 ± 75 ms
Volubilitas	7
nuclear quadrupole moment
repertus	2001
parity	-

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

²⁵³Lr

mass number	253
neutron number	150
Relative Atomic Mass	253.09503385 ± 0.000176634 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	632 ± 46 ms
Volubilitas	7/2
nuclear quadrupole moment
repertus	1985
parity	-

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

²⁵⁴Lr

mass number	254
neutron number	151
Relative Atomic Mass	254.096238813 ± 0.000098026 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	12 ± 0.9 s
Volubilitas	4
nuclear quadrupole moment
repertus	1981
parity	+

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

²⁵⁵Lr

mass number	255
neutron number	152
Relative Atomic Mass	255.096562399 ± 0.000019 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	31.1 ± 1.1 s
Volubilitas	1/2
nuclear quadrupole moment	0
repertus	1971
parity	-

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

²⁵⁶Lr

mass number	256
neutron number	153
Relative Atomic Mass	256.098494024 ± 0.000089 Da
g-factor	0
natural abundance
radioactivitas	☢️ radioactive element
half-life	27.9 ± 1 s
Volubilitas	0
nuclear quadrupole moment	0
repertus	1965
parity	-

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

²⁵⁷Lr

mass number	257
neutron number	154
Relative Atomic Mass	257.09948 ± 0.000047 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	6 ± 0.4 s
Volubilitas	7/2
nuclear quadrupole moment
repertus	1971
parity	-

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

²⁵⁸Lr

mass number	258
neutron number	155
Relative Atomic Mass	258.101753 ± 0.000109 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	3.92 ± 0.33 s
Volubilitas
nuclear quadrupole moment
repertus	1971
parity

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

²⁵⁹Lr

mass number	259
neutron number	156
Relative Atomic Mass	259.1029 ± 0.000076 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	6.2 ± 0.3 s
Volubilitas	1/2
nuclear quadrupole moment	0
repertus	1971
parity	-

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

²⁶⁰Lr

mass number	260
neutron number	157
Relative Atomic Mass	260.105504 ± 0.000134 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	3 ± 0.5 m
Volubilitas
nuclear quadrupole moment
repertus	1971
parity

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

²⁶¹Lr

mass number	261
neutron number	158
Relative Atomic Mass	261.106879 ± 0.000215 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	39 ± 12 m
Volubilitas	1/2
nuclear quadrupole moment	0
repertus	1987
parity	-

decay mode	intensity
SF (spontaneous fission)	100%
α (α emission)

²⁶²Lr

mass number	262
neutron number	159
Relative Atomic Mass	262.109615 ± 0.000215 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas
nuclear quadrupole moment
repertus	1987
parity

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

²⁶³Lr

mass number	263
neutron number	160
Relative Atomic Mass	263.111293 ± 0.00024 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas	1/2
nuclear quadrupole moment	0
repertus
parity	-

decay mode	intensity
α (α emission)

²⁶⁴Lr

mass number	264
neutron number	161
Relative Atomic Mass	264.114198 ± 0.000468 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas
nuclear quadrupole moment
repertus
parity

decay mode	intensity
α (α emission)
SF (spontaneous fission)

²⁶⁵Lr

mass number	265
neutron number	162
Relative Atomic Mass	265.116193 ± 0.000587 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life
Volubilitas	1/2
nuclear quadrupole moment	0
repertus
parity	-

decay mode	intensity
α (α emission)
SF (spontaneous fission)

²⁶⁶Lr

mass number	266
neutron number	163
Relative Atomic Mass	266.119874 ± 0.000579 Da
g-factor
natural abundance
radioactivitas	☢️ radioactive element
half-life	22 ± 14 h
Volubilitas
nuclear quadrupole moment
repertus	2014
parity

decay mode	intensity
SF (spontaneous fission)	100%

historia

inventor	A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
location of discovery	United States
repertus	1961
Etymologia	Named in honor of Ernest O. Lawrence, inventor of the cyclotron.
pronunciation	lor-ENS-i-em (English)

source

Abundance
Abundance in Earth's crust
natural abundance (Oceanus)
natural abundance (Corpus humanum)	0 %
natural abundance (Meteoroides)	0 %
natural abundance (Sol)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Lawrencium on ChemicalAid

Lawrencium (Lr)

Physical Property

Chemical Property

other

Isotopes of Lawrencium

251Lr

252Lr

253Lr

254Lr

255Lr

256Lr

257Lr

258Lr

259Lr

260Lr

261Lr

262Lr

263Lr

264Lr

265Lr

266Lr

historia

source

Nuclear Screening Constants

²⁵¹Lr

²⁵²Lr

²⁵³Lr

²⁵⁴Lr

²⁵⁵Lr

²⁵⁶Lr

²⁵⁷Lr

²⁵⁸Lr

²⁵⁹Lr

²⁶⁰Lr

²⁶¹Lr

²⁶²Lr

²⁶³Lr

²⁶⁴Lr

²⁶⁵Lr

²⁶⁶Lr