Examlex
Identify the positive and negative aspects of fog.
Potassium
A chemical element with symbol K and atomic number 19, it's a vital nutrient that regulates fluid balance and nerve signals.
Oxidation Number
The oxidation number is a value assigned to an element in a chemical compound that represents the number of electrons lost or gained by an atom of that element in the compound.
Oxygen
A chemical element with the symbol O, essential for most forms of life and known for its role in combustion and respiration.
MgO
Magnesium oxide, a white hygroscopic solid mineral that is used as a refractory material, in medication, and as a magnesium source in animal feeds.
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