A compound contain two or more elements associated by chemical bonds.
fluoride
An ionic compound is an example of a chemical compound.
A chemical analysis is necessary.
A chemical formula shows the components of a chemical compound.
Acetic acid (CH3COOH) is a compound.
A chemical reaction is the transformation of a compound in another compound.
The chemical formula of a compound states the number and types of atoms in each molecule of a compound.
A difference of quality; the pure chemical compound is a refined compound, having a very low concentration of impurities.
MgP does not exist. Magnesium phosphide is the chemical name of Mg3P2 and might be in use as rodenticides or pyrotechnics, but not sure of that, though Ca3P2 is.
Neon (Ne) is a chemical element, not a compound.
Helium (He) is a chemical element, not a compound; the chemical symbol is He.