Naming Covalent Compounds specify name Binary Ionic compounds Polyatomic ions Naming through Polyatomic ion Naming with Roman number Formula creating Naming Acids


Naming Ionic Compounds making use of Roman number (The Stock mechanism of Naming)

The stock System

History- The type of naming you will learn around is called the Stock mechanism or Stock"s system. It to be designed by Alfred share (1876-1946), a German chemist and very first published in 1919. In his own words, he taken into consideration the system to be "simple, clear, automatically intelligible, capable of the most basic application."

In 1924, a German commission recommended Stock"s device be embraced with part changes. Because that example, FeCl2,which would have been called iron(2)-chloride follow to Stock"s initial idea, came to be iron(II) chloride in the modification proposal. In 1934, Stock approved of the roman inn numerals, however felt it better to store the hyphen and drop the parenthesis. This suggestion has not been followed, but the Stock system remains in use world-wide.

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How carry out we surname compounds when the cation of variable charge is involved?

Some facets have an ext then one oxidation number and when naming a compound these must be identified. Romannumerals are shown after the cation in parenthesis( ) to show the oxidation number.

To recognize what the oxidation number is, you need to use the anion (negative ion) to recognize what the optimistic oxidation number is.

Below you have the right to see few of the elements with an ext than 1 oxidation number.

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Example- Pb(NO3)4 write the surname "lead nitrate". Because lead has much more than one oxidation state us must number out i beg your pardon lead us have. Due to the fact that each nitrate (4 that them) has a 1- charge, the Pb need to be 4+. For this reason our roman character will be (IV).

Pb(NO3)4 is called "lead(IV) nitrate"

Highlight to reveal names


FormulaNameFormulaName
FeCl2 iron (II) chlorideSnCl4tin (IV) chloride
CoBr3 cobalt (III) bromideFePiron (III) phosphide
MnO2 manganese (IV) oxideHg2Smercury (I) sulfide
NiBr2 nickel (II) bromidePbOlead (II) oxide
HgOmercury (II) oxideAuIgold (I) iodide
CuF2 copper (II) fluorideSnS2tin (IV) sulfide
CuIcopper (I) iodideFeBr3 iron (III) bromide
SnBr2tin (II) bromideCr2O3 chromium (III) oxide
Au3Pgold (I) phosphideCoScobalt (II) sulfide
Cr2S3chromium (III) sulfideMnI2 manganese (II) iodide
NiBrnickel (I) bromideNiSnickel (II) sulfide
FeSiron (II) sulfidePbO2lead (IV) oxide
PbCl4lead (IV) chlorideMn2O5 manganese (V) oxide


Naming Covalent Compounds specify name Binary Ionic compound Polyatomic ions Naming v Polyatomic ion Naming with Roman number Formula composing Naming Acids