Lawrencium (Lr)

grundstof med atomnummer 103

Atomnummer	103
Atommasse	262
mass number	251

Gruppe
Periode	7
Blok	f

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

Animated Bohrs atommodel of Lr (Lawrencium)

Fysisk Egenskab

Atomradius
molar volume
Kovalent Radius	161 pm 141 pm
Metallic Radius
Ionisk radius	107,4 pm
Crystal Radius	121,4 pm
Van der Waals-radius	246 pm 323,6 pm
massefylde	15,6 g/cm³

Kemisk Egenskab

{ERROR}

energi

proton affinity
electron affinity
ioniseringsenergi	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 1.020 eV/particle 1.061 eV/particle 1.098 eV/particle 1.280 eV/particle 1.320 eV/particle 1.360 eV/particle 1.410 eV/particle 1.570 eV/particle 1.620 eV/particle 1.760 eV/particle 1.810 eV/particle 2.010 eV/particle 2.100 eV/particle 2.190 eV/particle 2.290 eV/particle 2.380 eV/particle 2.470 eV/particle 2.570 eV/particle 2.670 eV/particle 2.780 eV/particle 2.860 eV/particle 2.960 eV/particle 3.060 eV/particle 3.150 eV/particle 3.250 eV/particle 3.741 eV/particle 3.821 eV/particle 3.906 eV/particle 3.996 eV/particle 4.082 eV/particle 4.165 eV/particle 4.360 eV/particle 4.448 eV/particle 4.540 eV/particle 4.630 eV/particle 4.990 eV/particle 5.070 eV/particle 5.160 eV/particle 5.250 eV/particle 5.920 eV/particle 6.030 eV/particle 6.290 eV/particle 6.390 eV/particle 9.920 eV/particle 10.110 eV/particle 10.310 eV/particle 10.520 eV/particle 10.720 eV/particle 10.920 eV/particle 11.480 eV/particle 11.680 eV/particle 11.910 eV/particle 12.120 eV/particle 12.710 eV/particle 12.890 eV/particle 13.090 eV/particle 13.300 eV/particle 15.300 eV/particle 15.600 eV/particle 16.000 eV/particle 16.200 eV/particle 32.400 eV/particle 32.900 eV/particle 33.400 eV/particle 33.900 eV/particle 41.600 eV/particle 42.300 eV/particle 43.200 eV/particle 43.759 eV/particle 172.930 eV/particle

Fordampningsvarme
smeltevarme
standard enthalpy of formation
elektron

Elektronskal	2, 8, 18, 32, 32, 8, 3

Valenselektron	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

Oxidationstrin	3
Elektronegativitet	0.24844
Electrophilicity Index
fundamental state of matter

stoffase
gaseous state of matter
Kogepunkt
Smeltepunkt	1.900,15 K
critical pressure
critical temperature
trippelpunkt
appearance
farve	Sort #ffffff #c70066 #c70066
appearance
Brydningsindeks
materialeegenskab
Varmeledningsevne
Termisk ekspansion
molar heat capacity
Varmefylde
Adiabateksponenten
electrical properties
type
specifik ledningsevne
Elektrisk resistivitet
superledning
Magnetisme
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curietemperaturen
Néel temperature
struktur
Krystalstruktur	{ERROR}
lattice constant
Lattice Angles
mechanical property
hårdhed
Kompressibilitetsmodul
Forskydningsmodul
E-modul
Poissons forhold
speed of sound
klassificering
Kategori	Actinider, Transition metals
CAS Group
IUPAC Group
Glawe Number	47
Mendeleev Number	42
Pettifor Number	34
Geochemical Class
Goldschmidt classification	synthetic

øvrige

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

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
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato
Paritet

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	369 ± 75 ms
spin	7
nuclear quadrupole moment
opdagelsesdato	2001
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	632 ± 46 ms
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1985
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	12 ± 0,9 s
spin	4
nuclear quadrupole moment
opdagelsesdato	1981
Paritet	+

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	31,1 ± 1,1 s
spin	1/2
nuclear quadrupole moment	0
opdagelsesdato	1971
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	27,9 ± 1 s
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1965
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	6 ± 0,4 s
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1971
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	3,92 ± 0,33 s
spin
nuclear quadrupole moment
opdagelsesdato	1971
Paritet

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	6,2 ± 0,3 s
spin	1/2
nuclear quadrupole moment	0
opdagelsesdato	1971
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	3 ± 0,5 m
spin
nuclear quadrupole moment
opdagelsesdato	1971
Paritet

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	39 ± 12 m
spin	1/2
nuclear quadrupole moment	0
opdagelsesdato	1987
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato	1987
Paritet

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid
spin	1/2
nuclear quadrupole moment	0
opdagelsesdato
Paritet	-

decay mode	Intensitet
α (α emission)

²⁶⁴Lr

mass number	264
neutron number	161
Relative Atomic Mass	264,114198 ± 0,000468 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato
Paritet

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid
spin	1/2
nuclear quadrupole moment	0
opdagelsesdato
Paritet	-

decay mode	Intensitet
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
radioaktivitet	☢️ radioactive element
halveringstid	22 ± 14 h
spin
nuclear quadrupole moment
opdagelsesdato	2014
Paritet

decay mode	Intensitet
SF (spontaneous fission)	100%

historie

opdager eller opfinder	A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
fundsted	United States
opdagelsesdato	1961
etymologi	Named in honor of Ernest O. Lawrence, inventor of the cyclotron.
udtale	lor-ENS-i-em (engelsk)

source

Forekomst
Abundance in Earth's crust
natural abundance (verdenshave)
natural abundance (menneskelige krop)	0 %
natural abundance (Meteoroid)	0 %
natural abundance (Solen)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Lawrencium on ChemicalAid

Lawrencium (Lr)

Fysisk Egenskab

Kemisk Egenskab

øvrige

Isotopes of Lawrencium

251Lr

252Lr

253Lr

254Lr

255Lr

256Lr

257Lr

258Lr

259Lr

260Lr

261Lr

262Lr

263Lr

264Lr

265Lr

266Lr

historie

source

Nuclear Screening Constants

²⁵¹Lr

²⁵²Lr

²⁵³Lr

²⁵⁴Lr

²⁵⁵Lr

²⁵⁶Lr

²⁵⁷Lr

²⁵⁸Lr

²⁵⁹Lr

²⁶⁰Lr

²⁶¹Lr

²⁶²Lr

²⁶³Lr

²⁶⁴Lr

²⁶⁵Lr

²⁶⁶Lr