Roman numerals next to element
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Roman numerals next to element
What do roman numerals next to an elements name mean? Ex: in 2A.23 indium(III) sulfide
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Re: Roman numerals next to element
The roman numerals specify the atom's ionic form for the atoms that can gain/lose differing number of electrons.
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Re: Roman numerals next to element
The roman numeral proceeding the element name represents the charge of the element.
Re: Roman numerals next to element
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
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Re: Roman numerals next to element
It signifies the charge of that atom as some elements have different ion forms.
Last edited by ElliotPourdavoud 1A on Sun Oct 28, 2018 11:48 pm, edited 1 time in total.
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Re: Roman numerals next to element
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.
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Re: Roman numerals next to element
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.
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Re: Roman numerals next to element
Roman numerals are used to name the different ions of the transition metals. An example would be: Cu3+ named as Cu(III).
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