Tin (Sn). Diagram of the nuclear composition, electron configuration, chemical data, and valence orbitals of an atom of tin-119 (atomic number: 50), a
Tin (Sn). Diagram of the nuclear composition, electron configuration, chemical data, and valence orbitals of an atom of tin-119 (atomic number: 50), an isotope of this element. The nucleus consists of 50 protons (red) and 69 neutrons (orange). 50 electrons (white) successively occupy available electron shells (rings). The stability of an element's outer (valence) electrons determines its chemical and physical properties. Tin is a post-transition metal in group 14, period 5, and the p-block of the periodic table. It has a melting point of 231 degrees Celsius, and has been used since antiquity in alloys such as bronze. Modern uses include tin cans.
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Photo credit: © CARLOS CLARIVAN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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