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What is the empirical formula for an ionic compound?

Answer 1

An ionic formula is effectively an empirical formula. Empirical formulae are the simplest ratio of elements in a compound. An ionic formula is the simplest ratio of ions in an ionic compound.

On the other hand, a molecular formula tells us the exact number of atoms within each molecule. This is why many molecular formulae can be simplified into an empirical formula.

#NaCl# does not mean one sodium ion and one chloride ion; it means for every sodium ion in the salt, there is also one chloride ion. #MgCl_2# means that there are two chloride ions for every magnesium ion in the salt The true numbers would be huge, of course, so we write it as the simplest ratio (the same as an empirical formula).

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Answer 2

Owen Ambrose

The ratio of the cations to the anions in the compound is found and reduced to the smallest whole number ratio, which is the empirical formula for an ionic compound. It represents the simplest whole number ratio of the ions present in the compound.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.