Roman numerals next to element

[juliasloan_4g]

What do roman numerals next to an elements name mean? Ex: in 2A.23 indium(III) sulfide

[Meghanhe1l]

The roman numerals specify the atom's ionic form for the atoms that can gain/lose differing number of electrons.

[Ivan Tadeja 1G]

The roman numeral proceeding the element name represents the charge of the element.

[705192887]

The roman numeral signifies what the charge on that atom is. For example, depending on what Iron or another element is bonded to, it could be Iron II or Iron III to balance the charges. Hope this helps! #sickomode

[ElliotPourdavoud 1A]

It signifies the charge of that atom as some elements have different ion forms.

[Arshia Ramesh 1G]

It means the charge of the element!

[Ashley Kim]

It's important to note that some transition metals are capable of having multiple charges, hence the need for the Roman numerals in the first place. Transition metal ions involve a rearrangement of both the d and s orbitals. This is because according to the Aufbau principle, the electrons fill the 4s shell before the 3d shell, etc.

[Catly Do 2E]

The use of Roman numerals in chemical nomenclature is to indicate the charge of the ion. Usually, the transitional metal has multiple possible ion charges. For example, Fe (II) stands for Fe2+ and Fe (III) stands for Fe3+; the charge changes according to the number of electrons on the atom.

[Jessica Dharmawan 1G]

Roman numerals are used to name the different ions of the transition metals. An example would be: Cu3+ named as Cu(III).