";s:4:"text";s:3277:" Curium is a radioactive element with atomic number 96 and element symbol Cm. This WebElements periodic table page contains physical properties for the element curium Get … Solid at standard temperature (20 o C). Its radiation destroys bone marrow preventing red blood cell production. Curium is a transuranic radioactive chemical element with the symbol Cm and atomic number 96. Atmospheric testing of nuclear weapons, which ceased worldwide by 1980, generated most environmental curium. Know everything about Curium Facts, Physical Properties, Chemical Properties, Electronic configuration, Atomic and Crystal Structure. The number of electrons in each of curium's shells is 2, 8, 18, 32, 25, 9, 2 and its electron configuration is [Rn] 5f 7 6d 1 7s 2. Most compounds of trivalent curium are stable and faintly yellow or yellow-green.
However, more energy is required to add an electron to a negative ion which overwhelms any the release of energy from the electron attachment process.
In its elemental form, curium's CAS number is 7440-51-9.
On the other hand neon, the noble gas, immediately preceding it in the periodic table, requires 2081 kJ/mol or 21.56 eV/atom.The liquid phase has a higher internal energy than the solid phase. Relative atomic mass The mass of an atom relative to that of carbon-12. It was produced by the bombardment of alpha particles on plutonium Pu-239 using the 60 inch cyclotron [1]. The physical properties of curium include a boiling point of 1,340°C (2,444°F), and a melting point of 3,110°C (5,630°F). It is present in nature in areas where nuclear tests were conducted.
Because of its high radioactivity curium should be handled with care. Curium is highly radioactive. The amount is however neglible and its radiation contribute only a thiny fraction of the Eartch's background radiation.