Dysprosium (Dy). Diagram of the nuclear composition and electron configuration of an atom of dysprosium-164 (atomic number: 66), the most common isoto
Dysprosium (Dy). Diagram of the nuclear composition and electron configuration of an atom of dysprosium-164 (atomic number: 66), the most common isotope of this element. The nucleus consists of 66 protons (red) and 98 neutrons (blue). 66 electrons (green) bind to the nucleus, successively occupying available electron shells (rings). Dysprosium is a lanthanide in period 6, and the f-block of the periodic table. It melts at 1407 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.
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