The metals by themselves do not have chemical formulas, they have chemical symbols which are shown on the Periodic Table of the elements. They only have chemical formulas if they are chemically bonded to another element, usually a nonmetal.
Some of the transition state metals are multivalent.
Co2
The chemical symbol for Silver is Ag
rust on a car
Soil is a chemical solution of metals
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No, elements are the makeups of chemical formulas. No, elements are the makeups of chemical formulas.