Cerium, atomic structure

Cerium, atomic structure

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This image is part of the sequence science and technology: atomic structure and data for the elements

Credit: CARLOS CLARIVAN/SCIENCE PHOTO LIBRARY

Caption: Cerium (Ce). Diagram of the nuclear composition, electron configuration, chemical data, and valence orbitals of an atom of cerium-140 (atomic number: 58), the most common isotope of this element. The nucleus consists of 58 protons (red) and 82 neutrons (orange). 58 electrons (white) successively occupy available electron shells (rings). Cerium is a lanthanide in period 6, and the f-block of the periodic table. It melts at 795 degrees Celsius. The trend across the lanthanide series arises from the failure of electrons filling an inner f-subshell (here, within the 4th ring) to shield outer (valence) electrons from increasing nuclear charge.

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Keywords: 4f, 4f1, 5d, 5d1, 6s, 6s2, amu, atom, atomic, atomic number, atomic orbitals, atomic radius, atomic weight, black background, ce, cerium, cerium-140, chemical data, chemical properties, chemical property, chemistry, diagram, electron configuration, electron number, electron shell, electronic, electrons, element, elemental, elements, energy levels, f block, f-block, illustration, isotope, lanthanide, lanthanides, lanthanoid, lanthanoids, level, levels, neutron, neutron number, neutrons, nuclear, nuclear data, nucleon, nucleons, nucleus, orbital, orbital types, orbitals, period 6, physical chemistry, physical properties, physical property, pm, proton number, quantum chemistry, rare earth, rare earths, shell, shell structure, shells, simple electron configuration, solid, solids, structural, structure, sub-atomic, subatomic, subshell, subshells, symbol, valence orbital, wave function

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