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Curium, 96 Curium Pronunciation (KEWR -ee-əm Appearance sillery metallic, glows purpie in the dark Mass number [247] Curium in the periodic cairt
Atomic nummer (Z ) 96 Group group n/a Period period 7 Block f-block Element category Actinide Electron confeeguration [Rn ] 5f7 6d1 7s2 Electrons per shell 2, 8, 18, 32, 25, 9, 2 Pheesical properties Phase at STP solit Meltin pynt 1613 K (1340 °C, 2444 °F) Bylin pynt 3383 K (3110 °C, 5630 °F) Density (near r.t. ) 13.51 g/cm3 Heat o fusion 13.85 kJ/mol Vapour pressur
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
1788
1982
Atomic properties Oxidation states +2, +3 [ 1] [ 2] amphoteric oxide) Electronegativity Pauling scale: 1.3 Ionisation energies Atomic radius empirical: 174 pm Covalent radius 169±3 pm Colour lines in a spectral range Spectral lines o curiumIther properties Naitural occurrence synthetic Creestal structur dooble hexagonal close packed Electrical resistivity 1.25 µΩ·m[ 3] Magnetic orderin antiferromagnetic-paramagnetic transition at 52 K[ 3] CAS Nummer 7440-51-9 History Namin named after Marie Skłodowska-Curie an Pierre Curie Diskivery Glenn T. Seaborg , Ralph A. James , Albert Ghiorso (1944) Main isotopes o curium
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in
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C
1340
—
—
K
1613
1610
3
delta
F
2444
2440
4
delta
WD
String Module Error: Target string is empty !
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C: 1340, K: 1613, F: 2444
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in
calc from C
diff
report
ref
C
3110
—
—
K
3383
3380
3
delta
F
5630
5630
0
WD
String Module Error: Target string is empty !
input
C: 3110, K: 3383, F: 5630
comment
References
Thir references will appear in the airticle, but this list appears anerly on this page.
↑ Kovács, Attila; Dau, Phuong D.; Marçalo, Joaquim; Gibson, John K. (2018). "Pentavalent Curium, Berkelium, and Californium in Nitrate Complexes: Extending Actinide Chemistry and Oxidation States". Inorg. Chem . American Chemical Society. 57 (15): 9453–9467. doi :10.1021/acs.inorgchem.8b01450 . PMID 30040397 . ↑ a b Domanov, V. P.; Lobanov, Yu. V. (October 2011). "Formation of volatile curium(VI) trioxide CmO3 ". Radiochemistry . SP MAIK Nauka/Interperiodica. 53 (5): 453–6. doi :10.1134/S1066362211050018 . ↑ a b Schenkel, R (1977). "The electrical resistivity of 244Cm metal". Solid State Communications . 23 (6): 389. Bibcode :1977SSCom..23..389S . doi :10.1016/0038-1098(77)90239-3 .
