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What do the Roman numerals in a cation's name indicate?

A. how many valence electrons in the atom

B. the cation's ability to become an anion

C. the positive charge on the cation

D. how many compounds the cation can form

Respuesta :

Roman numerals in a cations name indicate C. the positive charge on the cation.

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Answer:

C. The positive charge on an ion

Explanation:

Roman numerals are used often in compounds involving transition metals for example copper (II) sulphate, copper (I) oxide, iron (III) Chloride. This is because such transition metals are capable of forming different types (in terms of charged) of cations. Iron for example can form the a 2+ cation or a 3+. So it is important to specify which one is in that compound because that affects the chemistry of the compound.

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