Rhodium (Rh). Diagram of the nuclear composition and electron configuration of an atom of rhodium-103 (atomic number: 45), the most common isotope of
Rhodium (Rh). Diagram of the nuclear composition and electron configuration of an atom of rhodium-103 (atomic number: 45), the most common isotope of this element. The nucleus consists of 45 protons (red) and 58 neutrons (yellow). 45 electrons (white) bind to the nucleus, successively occupying available electron shells (rings). Rhodium is a transition metal in group 9, period 5, and the d-block of the periodic table. It has a melting point of 1964 degrees Celsius. The trends across the transition metals are due to electrons filling an inner d-subshell (here, within the 4th ring), shielding the outer electrons from the increasing nuclear charge.
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Photo credit: © CARLOS CLARIVAN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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