Lawrencij[um] (Lr)

hemijski element sa simbolom Lr i atomskim brojem 103

Atomic Number	103
Atomic Weight	262
Maseni broj	251

Group
Period	7
Block	f

Proton	103 p⁺
Neutron	148 n⁰
Elektron	103 e^-

Animated Bohrov model atoma of Lr (Lawrencij[um])

Physical Property

Atomski Radijus
Molarni volumen
covalent radius	161 pm 141 pm
Metallic Radius
Ionski radijus	107,4 pm
Crystal Radius	121,4 pm
Van der Waalsov radijus	246 pm 323,6 pm
gustoća	15,6 g/cm³

Chemical Property

{ERROR}

energija

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

Toplota isparavanja
toplota topljenja
standard enthalpy of formation
Elektron

electron shell	2, 8, 18, 32, 32, 8, 3

Valentni elektron	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

oksidacijsko stanje	3
Elektronegativnost	0.24844
Electrophilicity Index
fundamental state of matter

agregatno stanje
gaseous state of matter
Boiling Point
Melting Point	1.900,15 K
critical pressure
Kritična temperatura
Trojna tačka
appearance
boja	Black #ffffff #c70066 #c70066
appearance
Indeks prelamanja
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
Specifična električna provodljivost
electrical resistivity
Superprovodljivost
Magnetizam
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Kirijeva tačka
Néel temperature
struktura
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
mechanical property
Tvrdoća
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
Brzina zvuka
klasifikacija
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
Kvantni brojevi	2P1/2
space group	()

Isotopes of Lawrencium

Stable Isotopes	0
Unstable Isotopes	16
Natural Isotopes	0

²⁵¹Lr

Maseni broj	251
broj neutrona	148
Relative Atomic Mass	251,094289 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
datum otkrića
parity

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

²⁵²Lr

Maseni broj	252
broj neutrona	149
Relative Atomic Mass	252,095048 ± 0,000198 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	369 ± 75 ms
spin	7
nuclear quadrupole moment
datum otkrića	2001
parity	-

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

²⁵³Lr

Maseni broj	253
broj neutrona	150
Relative Atomic Mass	253,09503385 ± 0,000176634 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	632 ± 46 ms
spin	7/2
nuclear quadrupole moment
datum otkrića	1985
parity	-

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

²⁵⁴Lr

Maseni broj	254
broj neutrona	151
Relative Atomic Mass	254,096238813 ± 0,000098026 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	12 ± 0,9 s
spin	4
nuclear quadrupole moment
datum otkrića	1981
parity	+

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

²⁵⁵Lr

Maseni broj	255
broj neutrona	152
Relative Atomic Mass	255,096562399 ± 0,000019 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	31,1 ± 1,1 s
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1971
parity	-

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

²⁵⁶Lr

Maseni broj	256
broj neutrona	153
Relative Atomic Mass	256,098494024 ± 0,000089 Da
g-factor	0
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	27,9 ± 1 s
spin	0
nuclear quadrupole moment	0
datum otkrića	1965
parity	-

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

²⁵⁷Lr

Maseni broj	257
broj neutrona	154
Relative Atomic Mass	257,09948 ± 0,000047 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	6 ± 0,4 s
spin	7/2
nuclear quadrupole moment
datum otkrića	1971
parity	-

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

²⁵⁸Lr

Maseni broj	258
broj neutrona	155
Relative Atomic Mass	258,101753 ± 0,000109 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3,92 ± 0,33 s
spin
nuclear quadrupole moment
datum otkrića	1971
parity

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

²⁵⁹Lr

Maseni broj	259
broj neutrona	156
Relative Atomic Mass	259,1029 ± 0,000076 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	6,2 ± 0,3 s
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1971
parity	-

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

²⁶⁰Lr

Maseni broj	260
broj neutrona	157
Relative Atomic Mass	260,105504 ± 0,000134 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	3 ± 0,5 m
spin
nuclear quadrupole moment
datum otkrića	1971
parity

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

²⁶¹Lr

Maseni broj	261
broj neutrona	158
Relative Atomic Mass	261,106879 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	39 ± 12 m
spin	1/2
nuclear quadrupole moment	0
datum otkrića	1987
parity	-

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

²⁶²Lr

Maseni broj	262
broj neutrona	159
Relative Atomic Mass	262,109615 ± 0,000215 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
datum otkrića	1987
parity

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

²⁶³Lr

Maseni broj	263
broj neutrona	160
Relative Atomic Mass	263,111293 ± 0,00024 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	1/2
nuclear quadrupole moment	0
datum otkrića
parity	-

decay mode	intensity
α (α emission)

²⁶⁴Lr

Maseni broj	264
broj neutrona	161
Relative Atomic Mass	264,114198 ± 0,000468 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin
nuclear quadrupole moment
datum otkrića
parity

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

²⁶⁵Lr

Maseni broj	265
broj neutrona	162
Relative Atomic Mass	265,116193 ± 0,000587 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada
spin	1/2
nuclear quadrupole moment	0
datum otkrića
parity	-

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

²⁶⁶Lr

Maseni broj	266
broj neutrona	163
Relative Atomic Mass	266,119874 ± 0,000579 Da
g-factor
natural abundance
Radioaktivnost	☢️ radioactive element
Vrijeme poluraspada	22 ± 14 h
spin
nuclear quadrupole moment
datum otkrića	2014
parity

decay mode	intensity
SF (spontaneous fission)	100%

historija

otkrivač ili izumitelj	A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
mjesto otkrića	United States
datum otkrića	1961
Etimologija	Named in honor of Ernest O. Lawrence, inventor of the cyclotron.
pronunciation	lor-ENS-i-em (engleski)

izvor

Abundance
Abundance in Earth's crust
natural abundance (okean)
natural abundance (ljudsko tijelo)	0 %
natural abundance (Meteoroidi)	0 %
natural abundance (Sunce)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Lawrencij[um] on ChemicalAid

Lawrencij[um] (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

historija

izvor

Nuclear Screening Constants

²⁵¹Lr

²⁵²Lr

²⁵³Lr

²⁵⁴Lr

²⁵⁵Lr

²⁵⁶Lr

²⁵⁷Lr

²⁵⁸Lr

²⁵⁹Lr

²⁶⁰Lr

²⁶¹Lr

²⁶²Lr

²⁶³Lr

²⁶⁴Lr

²⁶⁵Lr

²⁶⁶Lr