ક્યુરીયમ: આવૃત્તિઓ વચ્ચેનો તફાવત

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નવું પાનું : '''Curium''' ({{IPAc-en|icon|ˈ|k|jʊər|i|ə|m}} {{respell|KEWR|ee-əm}}) is a synthetic chemical element with the symbol '''Cm''' and [[atom...
 
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લીટી ૧:
'''Curiumક્યુરીયમ''' ({{IPAc-en|icon|ˈ|k|jʊər|i|ə|m}} {{respell|KEWR|ee-əm}}) is aએક [[synthetic element|synthetic chemicalકૃત્રિમ elementતત્વ]] withછે theજેની symbolસંજ્ઞા '''Cm''' andઅને [[atomicઅણુ numberક્ર્માંક]] 96૯૬ છે. This [[Radioactiveએક decay|radioactive]] [[transuranicકિરણોત્સારી element]]ખંડનથી ofનિર્મીત the [[actinide]]એક્ટિનાઈડ seriesશ્રેણીનું wasટ્રાંષ-યુરેનિક namedતત્વ afterછે. [[Marieઆનું Curie|Marieનામ Skłodowska-Curie]]મેરી andક્યુરીના herઅને husbandતેમના [[Pierreપતિ Curie]]પીરી ક્યુરીના નામ પરથી રખાયું છે. Curium was first intentionally produced and identified in summer 1944 by the group of [[Glenn T. Seaborg]] at the [[University of California, Berkeley]]. The discovery was kept secret and only released to the public in November 1945. Most curium is produced by bombarding [[uranium]] or [[plutonium]] with [[neutron]]s in [[nuclear reactor]]s – one [[tonne]] of spent [[nuclear fuel]] contains about 20 grams of curium.
 
Curium is a hard, dense silvery metal with a relatively high melting point and boiling point for an actinide. Whereas it is [[paramagnetism|paramagnetic]] at [[Standard conditions for temperature and pressure|ambient conditions]], it becomes [[antiferromagnetism|antiferromagnetic]] upon cooling, and other magnetic transitions are also observed for many curium compounds. In compounds, curium usually exhibits [[valence (chemistry)|valence]] +3 and sometimes +4, and the +3 valence is predominant in solutions. Curium readily oxidizes, and its oxides are a dominant form of this element. It forms strongly [[fluorescence|fluorescent]] complexes with various organic compounds, but there is no evidence of its incorporation into [[bacteria]] and [[archaea]]. When introduced into human body, curium accumulates in the bones, lungs and liver where it promotes [[cancer]].