Ciúiriam (Cm)

chemical element with the atomic number of 96

Atomic Number	96
Atomic Weight	247
Núicléónuimhir	231

Group
Period	7
Block	f

prótón	96 p⁺
neodrón	135 n⁰
leictreon	96 e^-

Physical Property

Ga Adamhach	276 pm
molar volume	18.28 cm³/mol
covalent radius	166 pm 136 pm 169 pm
Metallic Radius
ionic radius	97 pm 85 pm 95 pm 114.7 pm
Crystal Radius	111 pm 99 pm 109 pm 128.7 pm
Van der Waals radius	245 pm 332.6 pm
dlús	13.51 g/cm³

Chemical Property

fuinneamh

proton affinity
electron affinity
ionization energy	5.9914 eV/particle 10 eV/particle 20.1 eV/particle 37.7 eV/particle 51 eV/particle 69.1 eV/particle 97 eV/particle 112 eV/particle 128 eV/particle 144 eV/particle 167 eV/particle 190 eV/particle 212 eV/particle 235 eV/particle 253 eV/particle 272 eV/particle 311 eV/particle 332 eV/particle 460 eV/particle 489 eV/particle 518 eV/particle 550 eV/particle 580 eV/particle 611 eV/particle 657 eV/particle 689 eV/particle 723 eV/particle 755 eV/particle 910 eV/particle 950 eV/particle 990 eV/particle 1,030 eV/particle 1,140 eV/particle 1,180 eV/particle 1,300 eV/particle 1,340 eV/particle 1,480 eV/particle 1,560 eV/particle 1,640 eV/particle 1,730 eV/particle 1,810 eV/particle 1,890 eV/particle 1,980 eV/particle 2,060 eV/particle 2,160 eV/particle 2,240 eV/particle 2,320 eV/particle 2,410 eV/particle 2,490 eV/particle 2,580 eV/particle 2,976 eV/particle 3,050 eV/particle 3,125 eV/particle 3,207 eV/particle 3,284 eV/particle 3,360 eV/particle 3,515 eV/particle 3,593 eV/particle 3,679 eV/particle 3,758 eV/particle 4,078 eV/particle 4,156 eV/particle 4,239 eV/particle 4,317 eV/particle 4,791 eV/particle 4,880 eV/particle 5,110 eV/particle 5,200 eV/particle 8,270 eV/particle 8,440 eV/particle 8,620 eV/particle 8,820 eV/particle 9,000 eV/particle 9,180 eV/particle 9,630 eV/particle 9,820 eV/particle 10,020 eV/particle 10,220 eV/particle 10,760 eV/particle 10,920 eV/particle 11,100 eV/particle 11,270 eV/particle 12,740 eV/particle 12,950 eV/particle 13,360 eV/particle 13,550 eV/particle 27,740 eV/particle 28,180 eV/particle 28,700 eV/particle 29,100 eV/particle 34,600 eV/particle 35,200 eV/particle 36,000 eV/particle 36,493 eV/particle 143,299.6 eV/particle 145,743 eV/particle

enthalpy of vaporization
enthalpy of fusion
eantalpacht chaighdeánach an fhoirmithe	386 kJ/mol
leictreon

electron shell	2, 8, 18, 32, 25, 9, 2

Fiúsleictreon	2 ⓘ

cumraíocht leictreon	[Rn] 5f⁷ 6d¹ 7s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d¹⁰ 6p⁶ 5f⁷ 6d¹ 7s²

Staid ocsaídiúcháine	3, 4, 5, 6
Leictridhiúltacht	0.17439
Electrophilicity Index
fundamental state of matter

phase of matter	Solid
gaseous state of matter
Boiling Point
Melting Point	1,618.15 K
critical pressure
critical temperature
triple point
appearance
dath	Silver #ffffff #785ce3 #785ce3
appearance	silvery metallic, glows purple in the dark
Comhéifeacht athraonta
thermodynamic material property
Thermal Conductivity
Forbairt theirmeach
molar heat capacity
Specific Heat Capacity
Cóimheas saintoilleadh teasa
electrical properties
type
electrical conductivity
Friotachas
Forsheoltacht
Maighnéadas
type
So-ghabhálacht mhaighnéadach (Mass)
So-ghabhálacht mhaighnéadach (Molar)
So-ghabhálacht mhaighnéadach (Volume)
magnetic ordering
Teocht Curie
Néel temperature
struchtúr
Crystal Structure	Simple Hexagonal ()
lattice constant
Lattice Angles	π/2, π/2, 2 π/3
airíonna meicniúla
Cruas
Modal toirte
modal fiartha
modal Young
Cóimheas Poisson
luas forleata fuaime
aicmiúchán
Category	Actinides, Actinides
CAS Group
IUPAC Group
Glawe Number	40
Mendeleev Number	28
Pettifor Number	41
Geochemical Class
Goldschmidt classification	synthetic

eile

Gas Basicity
polarizability	144 ± 25 a₀
C6 Dispersion Coefficient
allotrope
Crosghearradh	60
Neutron Mass Absorption
Uimhir chandamach	9D2
space group	194 (P63/mmc)

Isotopes of Curium

Stable Isotopes	0
Unstable Isotopes	22
Natural Isotopes	0

²³¹Cm

Núicléónuimhir	231
neutron number	135
Mais Adamhach Choibhneasta	231.050746 ± 0.000322 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh
Paireacht	+

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

²³²Cm

Núicléónuimhir	232
neutron number	136
Mais Adamhach Choibhneasta	232.04974 ± 0.000216 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh
Paireacht	+

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

²³³Cm

Núicléónuimhir	233
neutron number	137
Mais Adamhach Choibhneasta	233.050771485 ± 0.000087059 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	27 ± 10 s
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2001
Paireacht	+

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

²³⁴Cm

Núicléónuimhir	234
neutron number	138
Mais Adamhach Choibhneasta	234.050158568 ± 0.000018333 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	52 ± 9 s
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	2001
Paireacht	+

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

²³⁵Cm

Núicléónuimhir	235
neutron number	139
Mais Adamhach Choibhneasta	235.051545 ± 0.00011 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	7 ± 3 m
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1981
Paireacht	+

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

²³⁶Cm

Núicléónuimhir	236
neutron number	140
Mais Adamhach Choibhneasta	236.051372112 ± 0.000018931 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	6.8 ± 0.8 m
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	2010
Paireacht	+

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

²³⁷Cm

Núicléónuimhir	237
neutron number	141
Mais Adamhach Choibhneasta	237.052868988 ± 0.00007987 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	2002
Paireacht	+

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

²³⁸Cm

Núicléónuimhir	238
neutron number	142
Mais Adamhach Choibhneasta	238.053081606 ± 0.000013133 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.2 ± 0.4 h
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1994
Paireacht	+

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

²³⁹Cm

Núicléónuimhir	239
neutron number	143
Mais Adamhach Choibhneasta	239.054908519 ± 0.000161107 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	2.5 ± 0.4 h
Guairne	7/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1952
Paireacht	-

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

²⁴⁰Cm

Núicléónuimhir	240
neutron number	144
Mais Adamhach Choibhneasta	240.055528233 ± 0.000002045 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	30.4 ± 3.7 d
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1949
Paireacht	+

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

²⁴¹Cm

Núicléónuimhir	241
neutron number	145
Mais Adamhach Choibhneasta	241.057651218 ± 0.000001725 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	32.8 ± 0.2 d
Guairne	1/2
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1952
Paireacht	+

decay mode	intensity
ϵ (electron capture)	99%
α (α emission)	1%

²⁴²Cm

Núicléónuimhir	242
neutron number	146
Mais Adamhach Choibhneasta	242.058834187 ± 0.000001224 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	162.8 ± 0.2 d
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1949
Paireacht	+

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	6.2%
34Si	1.1%
2β⁺ (double β⁺ decay)

²⁴³Cm

Núicléónuimhir	243
neutron number	147
Mais Adamhach Choibhneasta	243.061387329 ± 0.000001605 Da
G-fhachtóir	0.16 ± 0.032
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	29.1 ± 0.1 y
Guairne	5/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1950
Paireacht	+

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

²⁴⁴Cm

Núicléónuimhir	244
neutron number	148
Mais Adamhach Choibhneasta	244.062750622 ± 0.000001187 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	18.11 ± 0.03 y
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1950
Paireacht	+

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	1.37%

²⁴⁵Cm

Núicléónuimhir	245
neutron number	149
Mais Adamhach Choibhneasta	245.065491047 ± 0.000001233 Da
G-fhachtóir	0.14285714285714 ± 0.028571428571429
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	8.25 ± 0.07 ky
Guairne	7/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1954
Paireacht	+

decay mode	intensity
α (α emission)	100%
SF (spontaneous fission)	6.1%

²⁴⁶Cm

Núicléónuimhir	246
neutron number	150
Mais Adamhach Choibhneasta	246.067222016 ± 0.000001637 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	4.706 ± 0.04 ky
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1954
Paireacht	+

decay mode	intensity
α (α emission)	99.97385%
SF (spontaneous fission)	0.02615%

²⁴⁷Cm

Núicléónuimhir	247
neutron number	151
Mais Adamhach Choibhneasta	247.070352678 ± 0.000004076 Da
G-fhachtóir	0.08 ± 0.015555555555556
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	15.6 ± 0.5 My
Guairne	9/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1954
Paireacht	-

decay mode	intensity
α (α emission)	100%

²⁴⁸Cm

Núicléónuimhir	248
neutron number	152
Mais Adamhach Choibhneasta	248.072349086 ± 0.000002531 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	348 ± 6 ky
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1956
Paireacht	+

decay mode	intensity
α (α emission)	91.61%
SF (spontaneous fission)	8.39%
2β⁻ (double β⁻ decay)

²⁴⁹Cm

Núicléónuimhir	249
neutron number	153
Mais Adamhach Choibhneasta	249.075953992 ± 0.000002545 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	64.15 ± 0.03 m
Guairne	1/2
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1956
Paireacht	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁵⁰Cm

Núicléónuimhir	250
neutron number	154
Mais Adamhach Choibhneasta	250.078357541 ± 0.000011029 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh	1966
Paireacht	+

decay mode	intensity
SF (spontaneous fission)	74%
α (α emission)
β⁻ (β⁻ decay)

²⁵¹Cm

Núicléónuimhir	251
neutron number	155
Mais Adamhach Choibhneasta	251.082284988 ± 0.000024367 Da
G-fhachtóir
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré	16.8 ± 0.2 m
Guairne	3/2
nuclear quadrupole moment
dáta fionnachtana nó tionscnaimh	1978
Paireacht	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

²⁵²Cm

Núicléónuimhir	252
neutron number	156
Mais Adamhach Choibhneasta	252.08487 ± 0.00032 Da
G-fhachtóir	0
natural abundance
Meath radaighníomhach	☢️ radioactive element
leathré
Guairne	0
nuclear quadrupole moment	0
dáta fionnachtana nó tionscnaimh
Paireacht	+

decay mode	intensity
β⁻ (β⁻ decay)
α (α emission)

stair

fionnachtaí nó aireagóir	G.T.Seaborg, R.A.James, A.Ghiorso
áit ar tháinig air/uirthi	United States
dáta fionnachtana nó tionscnaimh	1944
Sanasaíocht	Named in honor of Pierre and Marie Curie.
pronunciation	KYOOR-i-em (Béarla)

foinse

Abundance
Abundance in Earth's crust
natural abundance (aigéan)
natural abundance (corp an duine)	0 %
natural abundance (dreigeoideach)	0 %
natural abundance (An Ghrian)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

Ciúiriam on ChemicalAid

Australian Educational Vocabulary ID	scot/3513
CAB ID	7536
Catholic Encyclopedia ID	04572c
ChEBI ID	33390
ChemSpider ID	22415
DSSTOX compound identifier	DTXCID80147881
DSSTox substance ID	DTXSID80225390
Den Store Danske ID	curium
Encyclopædia Britannica Online ID	science/curium-chemical-element
Encyclopædia Universalis ID	curium
Freebase ID	/m/025tkv0
French Vikidia ID	Curium
Great Russian Encyclopedia Online ID	2127358
ID GND	4148404-6
ID na topaice ar Quora	Curium
InChI	InChI=1S/Cm
InChIKey	NIWWFAAXEMMFMS-UHFFFAOYSA-N
KBpedia ID	Curium
MeSH descriptor ID	D003476
NALT ID	3199
NDL Authority ID	00575294
National Library of Israel J9U ID	987007538486405171
OmegaWiki Defined Meaning	157032
OpenAlex ID	C555352317
PDB ligand ID	ZCM
PDB structure ID	4ZHF
PubChem CID	23979
Römpp online ID	RD-03-02962
Store norske leksikon ID	curium
Treccani ID	curio
UNII	M5LL84MZ2W
USGS Thesaurus ID	1438
WordNet 3.1 Synset ID	14660398-n
aitheantóir LoC	sh85034863
uimhir CAS	7440-51-9

Ciúiriam (Cm)

Physical Property

Chemical Property

eile

Isotopes of Curium

231Cm

232Cm

233Cm

234Cm

235Cm

236Cm

237Cm

238Cm

239Cm

240Cm

241Cm

242Cm

243Cm

244Cm

245Cm

246Cm

247Cm

248Cm

249Cm

250Cm

251Cm

252Cm

stair

foinse

Nuclear Screening Constants

²³¹Cm

²³²Cm

²³³Cm

²³⁴Cm

²³⁵Cm

²³⁶Cm

²³⁷Cm

²³⁸Cm

²³⁹Cm

²⁴⁰Cm

²⁴¹Cm

²⁴²Cm

²⁴³Cm

²⁴⁴Cm

²⁴⁵Cm

²⁴⁶Cm

²⁴⁷Cm

²⁴⁸Cm

²⁴⁹Cm

²⁵⁰Cm

²⁵¹Cm

²⁵²Cm