ଛାଞ୍ଚ:Infobox Curium

Curium,  ₉₆Cm

ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	curium, Cm
Appearance	silvery
ଉଚ୍ଚାରଣ	/ˈkjʊəriəm/ KEWR-ee-əm
Curium in the periodic table
Gd ↑ Cm ↓ (Uqo) americium ← curium → berkelium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	96
ଶ୍ରେଣୀ, ବ୍ଳକ	group n/a, f-block
ପର୍ଯ୍ୟାୟ	period 7
ମୌଳିକ ପ୍ରକାର	actinide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)	(247)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ	[Rn] 5f7 6d1 7s2
per shell	2, 8, 18, 32, 25, 9, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା	solid
ଗଳନାଙ୍କ	1613 K ​(1340 °C, ​2444 °F)
ସ୍ଫୁଟନାଙ୍କ	3383 K ​(3110 °C, ​5630 °F)
Density near r.t.	13.51 g/cm3
Heat of fusion	? 15 kJ/mol
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1788 1982
Atomic properties
Oxidation states	4, 3 (amphoteric oxide)
Electronegativity	Pauling scale: 1.3
Atomic radius	empirical: 174 pm
Covalent radius	169±3 pm
Miscellanea
Crystal structure	​hexagonal close-packed (hcp)
Electrical resistivity	1.25 µ Ω·m
Magnetic ordering	antiferromagnetic→paramagnetic transition at 52 K
CAS Number	7440-51-9
ଇତିହାସ
ଆବିଷ୍କାର	Glenn T. Seaborg, Ralph A. James, Albert Ghiorso (1944)
Most stable isotopes of curium
iso NA half-life DM DE (MeV) DP 242Cm trace 160 d SF - - α 6.1 238Pu 243Cm trace 29.1 y α 6.169 239Pu ε 0.009 243Am SF - - 244Cm trace 18.1 y SF - - α 5.8048 240Pu 245Cm trace 8500 y SF - - α 5.623 241Pu 246Cm trace 4730 y α 5.475 242Pu SF - - 247Cm trace 1.56×107 y α 5.353 243Pu 248Cm trace 3.40×105 y α 5.162 244Pu SF - - 250Cm syn 9000 y SF - - α 5.169 246Pu β− 0.037 250Bk

References

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