Diagram of the nuclear composition, electron configuration, and valence orbitals of an atom of mercury-201 (atomic number: 80), an isotope of this element. The nucleus consists of 80 protons (blue) and 121 neutrons (red). Mercury is a transition metal in group 12, period 6, and the d-block of the periodic table. It is the only metal to be liquid at room temperature, freezing at minus 39 degrees Celsius. This is because the d-subshell shielding effect of outer (valence) electrons ends. It is a toxic metal, used in thermometers, barometers and manometers. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clarivan, Carlos |
Bildgröße: | 4800 px × 3872 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |