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For what type(s) of compound do we use Roman numerals in the name?

User Rob Wagner
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Answer: ionic compounds

Step-by-step explanation:

The nomenclature of covalent compound is given by:

1. The less electronegative element is written first.

2. The more electronegative element is written then, and a suffix is added with it. The suffix added is '-ide'.

3. If atoms of an element is greater than 1, then prefixes are added which are 'mono' for 1 atom, 'di' for 2 atoms, 'tri' for 3 atoms and so on..

For example: IUPAC name for
BH_3 is boron trihydride.

The nomenclature of ionic compounds is given by:

1. Positive is written first followed by the oxidation state of metal roman numerals in square brackets.

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

Hence, the name of
Fe(NO_3)_2 is iron (II) nitrate.

User SIMULATAN
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