Diagram of the nuclear composition, electron configuration, and valence orbitals of an atom of lead-207 (atomic number: 82), an isotope of this element. The nucleus consists of 82 protons (blue) and 125 neutrons (red). The stability of an element's outer (valence) electrons determines its chemical and physical properties. Lead is a post-transition metal in group 14, period 6, and the p-block of the periodic table. It has a melting point of 327 degrees Celsius. Excessive exposure can cause poisoning. Uses include batteries, weights and bullets. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clarivan, Carlos |
Bildgröße: | 4800 px × 3872 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |