What is the atomic weight of aluminum

Aluminum (Al)

Health effects of aluminum - Environmental effects of aluminum

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Atomic number13

molar mass26.98 g mol -1
Electronegativity (Pauling)1,5
Density at 20 ° C2.7 g cm -3
Melting point660.4 ° C
boiling point2467 ° C
Atomic radius (Van der Waals)0.143 nm
Ionic radius0.05 nm
natural isotopes1
artificial isotopes16
Electron configuration1s2 2s2 2p6 3s2 3p1
Ionization energy of the 1st electron577.4 kJ mol -1
Ionization energy of the 2nd electron1816.1 kJ mol -1
Ionization energy of the 3rd electron2744.1 kJ mol -1
Standard potential- 1.67V
History:1825 Christian Ønsterd
OccurrenceAluminum is the most common metal found in the earth's crust

Health effects of aluminum

Aluminum is one of the most commonly used metals. At the same time, it is also common in the earth's crust. Because of this widespread use, it undoubtedly has the reputation of being harmless. But aluminum can also be harmful to health, especially of course when it occurs in high concentrations.
Aluminum mainly causes damage to health in its water-soluble form (as an ion). In aluminum solutions, these ions come mainly in connection with other ions, e.g. B. as aluminum chloride.
Aluminum can be absorbed through food, the respiratory tract or the skin. Long-term ingestion of significant concentrations can lead to serious health effects such as: B .:

- Damage to the central nervous system
- dementia
- memory loss
- listlessness
- Violent tremors

Aluminum poses a particular risk in certain workplaces - for example in mining, where it is often found in water. Factory workers who work with aluminum are also at risk as they inhale the aluminum dust, which can lead to lung problems. It is also particularly dangerous for kidney patients, as it can penetrate the body via dialysis machines.

Environmental effects of aluminum

The environmental impact of aluminum has caught our attention. Mainly due to the acidifying effect. Aluminum accumulates in plants and then causes damage to the health of the animals that eat these plants.
In lakes, a high aluminum concentration endangers many fish and amphibians, as the aluminum ions react with certain proteins in the gills of the fish and in the embryos of the frogs and cause the death of these animals.

Aluminum and water

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