Curi

Curi (Cm)

chemical element with the atomic number of 96
Atomic Number96
Atomic Weight247
Rhif màs231
Group
Period7
Blockf
Proton96 p+
Niwtron135 n0
Electron96 e-
Animated Bohr model of Cm (Curi)

Nodwedd Ffisegol

Atomic Radius
molar volume
18.28 cm³/mol
covalent radius
166 pm
Metallic Radius
ionic radius
97 pm
Crystal Radius
111 pm
Van der Waals radius
245 pm
density
13.51 g/cm³

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
ionization energy of Cm (Curi)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
386 kJ/mol
Electron
plisgyn yr electron2, 8, 18, 32, 25, 9, 2
Bohr model: Cm (Curi)
valence electron2
Lewis structure: Cm (Curi)
trefn yr electronnau[Rn] 5f7 6d1 7s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 5f7 6d1 7s2
Enhanced Bohr model of Cm (Curi)
Orbital Diagram of Cm (Curi)
Cyflwr ocsidiad3, 4, 5, 6
Electronegatifedd
Electrophilicity Index
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
Melting Point
1,618.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Silver
appearancesilvery metallic, glows purple in the dark
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type
dargludedd trydanol
Gwrthedd
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal StructureSimple Hexagonal ()
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
nodwedd mecanyddol deunyddiau
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
speed of sound
classification
CategoryActinides, Actinides
CAS Group
IUPAC Group
Glawe Number40
Mendeleev Number28
Pettifor Number41
Geochemical Class
Goldschmidt classificationsynthetic

other

Gas Basicity
polarizability
144 ± 25 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
60
Neutron Mass Absorption
quantum number9D2
space group194 (P63/mmc)

Isotopes of Curium

Stable Isotopes0
Unstable Isotopes22
Natural Isotopes0

231Cm

Rhif màs231
neutron number135
relative atomic mass
231.050746 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)

232Cm

Rhif màs232
neutron number136
relative atomic mass
232.04974 ± 0.000216 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)

233Cm

Rhif màs233
neutron number137
relative atomic mass
233.050771485 ± 0.000087059 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
27 ± 10 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod2001
parity+

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

234Cm

Rhif màs234
neutron number138
relative atomic mass
234.050158568 ± 0.000018333 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
52 ± 9 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod2001
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)71%
α (α emission)27%
SF (spontaneous fission)2%

235Cm

Rhif màs235
neutron number139
relative atomic mass
235.051545 ± 0.00011 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7 ± 3 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1981
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)4%

236Cm

Rhif màs236
neutron number140
relative atomic mass
236.051372112 ± 0.000018931 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.8 ± 0.8 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod2010
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)82%
α (α emission)18%
SF (spontaneous fission)

237Cm

Rhif màs237
neutron number141
relative atomic mass
237.052868988 ± 0.00007987 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod2002
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
α (α emission)

238Cm

Rhif màs238
neutron number142
relative atomic mass
238.053081606 ± 0.000013133 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.2 ± 0.4 h
spin0
nuclear quadrupole moment
0
dyddiad darganfod1994
parity+

decay modeintensity
ϵ (electron capture)
α (α emission)3.84%
SF (spontaneous fission)0.048%

239Cm

Rhif màs239
neutron number143
relative atomic mass
239.054908519 ± 0.000161107 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.5 ± 0.4 h
spin7/2
nuclear quadrupole moment
dyddiad darganfod1952
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
α (α emission)6.2%

240Cm

Rhif màs240
neutron number144
relative atomic mass
240.055528233 ± 0.000002045 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
30.4 ± 3.7 d
spin0
nuclear quadrupole moment
0
dyddiad darganfod1949
parity+

decay modeintensity
α (α emission)100%
ϵ (electron capture)
SF (spontaneous fission)3.9%

241Cm

Rhif màs241
neutron number145
relative atomic mass
241.057651218 ± 0.000001725 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
32.8 ± 0.2 d
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1952
parity+

decay modeintensity
ϵ (electron capture)99%
α (α emission)1%

242Cm

Rhif màs242
neutron number146
relative atomic mass
242.058834187 ± 0.000001224 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
162.8 ± 0.2 d
spin0
nuclear quadrupole moment
0
dyddiad darganfod1949
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)6.2%
34Si1.1%
+ (double β+ decay)

243Cm

Rhif màs243
neutron number147
relative atomic mass
243.061387329 ± 0.000001605 Da
g-factor
0.16 ± 0.032
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
29.1 ± 0.1 y
spin5/2
nuclear quadrupole moment
dyddiad darganfod1950
parity+

decay modeintensity
α (α emission)100%
ϵ (electron capture)0.29%
SF (spontaneous fission)5.3%

244Cm

Rhif màs244
neutron number148
relative atomic mass
244.062750622 ± 0.000001187 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
18.11 ± 0.03 y
spin0
nuclear quadrupole moment
0
dyddiad darganfod1950
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)1.37%

245Cm

Rhif màs245
neutron number149
relative atomic mass
245.065491047 ± 0.000001233 Da
g-factor
0.14285714285714 ± 0.028571428571429
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8.25 ± 0.07 ky
spin7/2
nuclear quadrupole moment
dyddiad darganfod1954
parity+

decay modeintensity
α (α emission)100%
SF (spontaneous fission)6.1%

246Cm

Rhif màs246
neutron number150
relative atomic mass
246.067222016 ± 0.000001637 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.706 ± 0.04 ky
spin0
nuclear quadrupole moment
0
dyddiad darganfod1954
parity+

decay modeintensity
α (α emission)99.97385%
SF (spontaneous fission)0.02615%

247Cm

Rhif màs247
neutron number151
relative atomic mass
247.070352678 ± 0.000004076 Da
g-factor
0.08 ± 0.015555555555556
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
15.6 ± 0.5 My
spin9/2
nuclear quadrupole moment
dyddiad darganfod1954
parity-

decay modeintensity
α (α emission)100%

248Cm

Rhif màs248
neutron number152
relative atomic mass
248.072349086 ± 0.000002531 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
348 ± 6 ky
spin0
nuclear quadrupole moment
0
dyddiad darganfod1956
parity+

decay modeintensity
α (α emission)91.61%
SF (spontaneous fission)8.39%
(double β decay)

249Cm

Rhif màs249
neutron number153
relative atomic mass
249.075953992 ± 0.000002545 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
64.15 ± 0.03 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1956
parity+

decay modeintensity
β (β decay)100%

250Cm

Rhif màs250
neutron number154
relative atomic mass
250.078357541 ± 0.000011029 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1966
parity+

decay modeintensity
SF (spontaneous fission)74%
α (α emission)
β (β decay)

251Cm

Rhif màs251
neutron number155
relative atomic mass
251.082284988 ± 0.000024367 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
16.8 ± 0.2 m
spin3/2
nuclear quadrupole moment
dyddiad darganfod1978
parity+

decay modeintensity
β (β decay)100%

252Cm

Rhif màs252
neutron number156
relative atomic mass
252.08487 ± 0.00032 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod
parity+

decay modeintensity
β (β decay)
α (α emission)
Cm-Fluoreszenz

hanes

darganfyddwr neu ddyfeisiwrG.T.Seaborg, R.A.James, A.Ghiorso
man darganfodUnited States
dyddiad darganfod1944
geirdarddiadNamed in honor of Pierre and Marie Curie.
ynganiadKYOOR-i-em (Saesneg)

source

Abundance
Abundance in Earth's crust
natural abundance (cefnfor)
natural abundance (corff dynol)
0 %
natural abundance (Awyrfaen)
0 %
natural abundance (Haul)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants