Curium
Cm
Element 96




History of Curium:

Curium was discovered by Jamese, Seaborg, and Ghiroso in 1944 at the Metallurgical Laboratory in Chicago. It was discovered as a result of bombarding 239 Pu. Visible amounts were first isolated by Werner and Perlman in 1947 atthe University of California. There are fourteen known isotopes of curium, the most stable having a half life of 16 million years. Even though minute amounts of curium may exist in uranium, curium has not been found in nature.

Curiums stats:


Information Definition Curium's stats
Atomic Number The amount of protons in an atom. 96
Atomic Mass The amount of protons and nuetrons in the nucleus. 247
Density Quantity of a substance that occupies a unit of volume. 1.351 g/cm3
Melting Point The melting point is the temperature at which the vapour pressure of the solid and the liquid are the same and the presssure totals one atmosphere. 1613 K
Boiling point The boiling point is the temperature at which the vapour pressure of a liquid is one atmosphere. 3383 K
Oxidation States The state of an element in a compound with respect to the number of electrons it has lost or gained, expressed as a positive or negative number indicating the ionic charge of an atom and equal to its valence. +3, +4
Lewis Strucure Configuration of the electrons.
    .
   Cm.

Electron Configuration This gives the ground state neutral gaseous atom electronic configuration of the elements. [Rn] 5f7 6d1 7s2
Ionization energy The ionization enthalpy is a measure of the energy required to remove one electron from one mole of gaseous atoms or ions. 581 kJ/mol
Electronegativity Electrostatic force of attraction between the nucleus and the valence electrons 1.3 on the pauling scale
Atomic Radius The closest distance to which one atom will approach another atom of any size. 174 pm
Ionic radius Distance between the nucleus of an atom and its outer shell. 111 pm


Uses of Curium:

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