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It is impossible to know the mass of a large ionic lattice.

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7y ago
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11y ago

Ionic compounds form crystal lattices, not molecules. The term formula unit is used to indicate the simplest whole-number ratio of ions in the compound.

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14y ago

Because an ion is not a molecule.

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Q: Why do you use the term formula mass instead of molecular mass for ionic compound?
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Related questions

Is the formula NH4Br a molecular compound?

No; the compound with the formula NH4Br is an ionic compound.


Is KCL a molecular formula?

More correct KCl is the formula unit of potassium chloride.


What is the molecular formula of sodium bicarbonate?

NaHCO3. Note that since this compound has ionic bonds, it does not strictly have molecules but instead has "formula units.


Would ionic or covalent molecules use the molecular formula or empirical formula?

What you write for an ionic compound is called the formula unit, but the formula unit is almost always the same as the empirical formula. The answer to your question could not be the molecular formula because an ionic compound is not a molecule.


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Magnesium oxide is an ionic compound with the formula MgO.


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Since carbon monoxide is not an ionic compound it technically doesn't have an ionic formula. The molecular formula for carbon monoxide is CO


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Ammonia is a molecular compound and not ionic.


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Molecular, specifically an organic compound with the general formula: CH3(CH2)3OH


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Sort of, though the term "chemical formula" is more accurate for describing compound molecular or otherwise.


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