Diagram of the nuclear composition and electron configuration of an atom of cerium-140 (atomic number: 58), the most common isotope of this element. The nucleus consists of 58 protons (blue) and 82 neutrons (yellow). 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 electrons from increasing nuclear charge. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clarivan, Carlos |
Bildgröße: | 4800 px × 3872 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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