Examlex
What are the smallest units of meaning in a language?
Calcium
A chemical element with the symbol Ca and atomic number 20, a reactive, pale yellow metal that forms compounds with many other elements.
Ionic Formula
A notation that represents the composition of an ionic compound by showing the ratio of ions present in the compound.
Compound
A substance formed from two or more chemical elements chemically bonded together, with a fixed ratio determining its composition.
Fe2+
Ferrous ion, a form of the iron ion where iron has a valency of +2, commonly involved in redox reactions and an essential part of hemoglobin.
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