Lawirensi (Lr)

chemical element with the atomic number of 103

Atomic Number	103
Atomic Weight	262
mass number	251

Group
Period	7
Block	f

protoni	103 p⁺
nyutroni	148 n⁰
elektroni	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
msongamano	15.6 g/cm³

Chemical Property

{ERROR}

nishati

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
elektroni

Mzingo elektroni	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	1,900.15 K
critical pressure
critical temperature
Kiwango utatu
appearance
Rangi	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
superconductivity
Uga sumaku
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
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
Unururifu	☢️ radioactive element
Nusumaisha
spin
nuclear quadrupole moment
Uvumbuzi
parity

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	369 ± 75 ms
spin	7
nuclear quadrupole moment
Uvumbuzi	2001
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	632 ± 46 ms
spin	7/2
nuclear quadrupole moment
Uvumbuzi	1985
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	12 ± 0.9 s
spin	4
nuclear quadrupole moment
Uvumbuzi	1981
parity	+

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	31.1 ± 1.1 s
spin	1/2
nuclear quadrupole moment	0
Uvumbuzi	1971
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	27.9 ± 1 s
spin	0
nuclear quadrupole moment	0
Uvumbuzi	1965
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	6 ± 0.4 s
spin	7/2
nuclear quadrupole moment
Uvumbuzi	1971
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	3.92 ± 0.33 s
spin
nuclear quadrupole moment
Uvumbuzi	1971
parity

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	6.2 ± 0.3 s
spin	1/2
nuclear quadrupole moment	0
Uvumbuzi	1971
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	3 ± 0.5 m
spin
nuclear quadrupole moment
Uvumbuzi	1971
parity

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	39 ± 12 m
spin	1/2
nuclear quadrupole moment	0
Uvumbuzi	1987
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha
spin
nuclear quadrupole moment
Uvumbuzi	1987
parity

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha
spin	1/2
nuclear quadrupole moment	0
Uvumbuzi
parity	-

hali ya kuoza	intensity
α (α emission)

²⁶⁴Lr

mass number	264
neutron number	161
Relative Atomic Mass	264.114198 ± 0.000468 Da
g-factor
natural abundance
Unururifu	☢️ radioactive element
Nusumaisha
spin
nuclear quadrupole moment
Uvumbuzi
parity

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha
spin	1/2
nuclear quadrupole moment	0
Uvumbuzi
parity	-

hali ya kuoza	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
Unururifu	☢️ radioactive element
Nusumaisha	22 ± 14 h
spin
nuclear quadrupole moment
Uvumbuzi	2014
parity

hali ya kuoza	intensity
SF (spontaneous fission)	100%

historia

mgunduzi au mvumbuzi	A.Ghiorso, T.Sikkeland, A.E.Larsh, R.M.Latimer
location of discovery	United States
Uvumbuzi	1961
Etimolojia	Named in honor of Ernest O. Lawrence, inventor of the cyclotron.
pronunciation	lor-ENS-i-em (Kiingereza)

source

Abundance
Abundance in Earth's crust
natural abundance (Bahari)
natural abundance (Mwili)	0 %
natural abundance (Kimondo)	0 %
natural abundance (Jua)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Lawirensi on ChemicalAid

lawrencium

Lawirensi (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