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You must use roman numerals to indicate which oxidation state the element is in when that element is in a compound.

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11y ago
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8y ago

It is a rule recommended by IUPAC to avoid confusion with coefficients.

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Q: Why must roman numerals be used when naming certain ionic compounds?
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Related questions

What is the method called for naming ionic compounds using Roman numerals?

I'm not sure if it has a name, but most call it 'naming ionic compounds with multiple ion charges'. I think that what you're looking for is the "Stock System."


Why is Al2O3 is named aluminum oxide without prefixes?

Aluminum oxide is an ionic compound. Prefixes are not used in naming ionic compounds, but are used in naming binary molecular compounds.


When naming ionic bonds the non metals' ending is changed to what?

When naming ionic compounds, the non metals' ending is changed to "-ide". "Ionic bonds" do not have particular names.


How do you put ionic compounds in roman numerals?

ye


When naming binary ionic or covalent compounds change the suffix of the anions name to what?

"-ide"


Why are prefixes used in naming ionic compounds?

two ions can combine in only one combination


Why are prefixes not used in naming ionic compounds?

two ions can combine in only one combination


Do roman numerals appear in covalent compound?

No, Roman numerals are not used in covalent compounds. Roman numerals are used in the naming of ionic compounds to indicate the charge of a transition metal ion. In covalent compounds, the elements are combined through sharing of electrons and do not involve ions with specific charges.


Why aren't prefixes used in naming ionic compounds?

Ate, and Ite. Theres also ide but just depends =]


Why are prefixes not needed in naming ionic compounds?

Ions combine in only one ratio, so prefixes are not needed.


In naming a binary ionic compound the name of the appears first followed by the name of the?

Binary ionic compounds are named by writing the name of the action, followed by the name of the anion. Potassium bromide is an example of an ionic compound.


True or false in naming the ionic compounds the cation is always named first and the anion second?

This system is not valid for all languages.