Laleku (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⁺
Netron	148 n⁰
Eléktron	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

molungé

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 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

enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Eléktron

electron shell	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	Solid
gaseous state of matter
Boiling Point
Melting Point	1.900,15 K
critical pressure
critical temperature
triple point
appearance
Lángi	Colorless #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
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
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
radioactivity	☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
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
radioactivity	☢️ radioactive element
half-life	369 ± 75 ms
spin	7
nuclear quadrupole moment
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	632 ± 46 ms
spin	7/2
nuclear quadrupole moment
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	12 ± 0,9 s
spin	4
nuclear quadrupole moment
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	31,1 ± 1,1 s
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	27,9 ± 1 s
spin	0
nuclear quadrupole moment	0
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	6 ± 0,4 s
spin	7/2
nuclear quadrupole moment
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	3,92 ± 0,33 s
spin
nuclear quadrupole moment
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	6,2 ± 0,3 s
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	3 ± 0,5 m
spin
nuclear quadrupole moment
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life	39 ± 12 m
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention	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
radioactivity	☢️ radioactive element
half-life
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention
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
radioactivity	☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
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
radioactivity	☢️ radioactive element
half-life
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention
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
radioactivity	☢️ radioactive element
half-life	22 ± 14 h
spin
nuclear quadrupole moment
time of discovery or invention	2014
parity

decay mode	intensity
SF (spontaneous fission)	100%

lisoló

discoverer or inventor	A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
location of discovery	United States
time of discovery or invention	1961
etymology	Named in honor of Ernest O. Lawrence, inventor of the cyclotron.
pronunciation	lor-ENS-i-em (lingɛlɛ́sa)

source

Abundance
Abundance in Earth's crust
natural abundance (ocean)
natural abundance (human body)	0 %
natural abundance (meteoroid)	0 %
natural abundance (Mói)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Laleku on ChemicalAid

lawrencium

Australian Educational Vocabulary ID	scot/3536
CAS Registry Number	22537-19-5
ChEBI ID	33397
ChemSpider ID	28934
DSSTOX compound identifier	DTXCID8099548
DSSTox substance ID	DTXSID30177057
Den Store Danske ID	lawrencium
Elhuyar ZTH ID	027359
Encyclopædia Britannica Online ID	science/lawrencium
Freebase ID	/m/025r_0l
GND ID	4166972-1
Gran Enciclopèdia Catalana ID	0118987
Great Russian Encyclopedia Online ID	2159168
InChI	InChI=1S/Lr
InChIKey	CNQCVBJFEGMYDW-UHFFFAOYSA-N
KBpedia ID	Lawrencium
MeSH descriptor ID	D007852
OmegaWiki Defined Meaning	161353
Pixiv Encyclopedia ID	ローレンシウム
Probes And Drugs ID	PD058531
PubChem CID	31192
Römpp online ID	RD-12-00553
Store norske leksikon ID	lawrencium
Treccani ID	laurenzio
UNII	QRT37X99RQ
USGS Thesaurus ID	1491
WordNet 3.1 Synset ID	14667501-n

Laleku (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

lisoló

source

Nuclear Screening Constants

²⁵¹Lr

²⁵²Lr

²⁵³Lr

²⁵⁴Lr

²⁵⁵Lr

²⁵⁶Lr

²⁵⁷Lr

²⁵⁸Lr

²⁵⁹Lr

²⁶⁰Lr

²⁶¹Lr

²⁶²Lr

²⁶³Lr

²⁶⁴Lr

²⁶⁵Lr

²⁶⁶Lr