"A formula that shows the kinds and numbers of atoms in the smallest representative unit that a substance"

While a formula unit is described as :

The lowest entirety number ratio of ions in one ionic compound. For this reason the formula unit for sodium chloride is NaCl.

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Though the meanings seem come differ, the written formulas appear identical. A chemical formula appears to it is in another means to stand for a formula unit. For example, NaCl is both the chemical formula and formula unit for salt Chloride. Is there ever a difference between the composed terms?

ionic-compounds terminology
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edited jan 11 "17 at 14:39
Ciambro
asked january 9 "17 in ~ 19:13

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