Naming Covalent Compounds specify name Binary Ionic link Polyatomic ions Naming v Polyatomic ions Naming with Roman numerals Formula writing Naming Acids


Naming Ionic Compounds utilizing Roman number (The Stock mechanism of Naming)

The share System

History- The form of naming you will certainly learn about is dubbed the Stock system or Stock"s system. It was designed by Alfred stock (1876-1946), a German chemist and very first published in 1919. In his own words, he considered the system to it is in "simple, clear, instantly intelligible, qualified of the most basic application."

In 1924, a German commission encourage Stock"s device be adopted with some changes. For example, FeCl2,which would have actually been named iron(2)-chloride according to Stock"s initial idea, came to be iron(II) chloride in the revised proposal. In 1934, Stock authorized of the roman inn numerals, but felt it better to store the hyphen and also drop the parenthesis. This suggestion has not been followed, but the Stock mechanism remains in use world-wide.

You are watching: In the stock system roman numerals are used to name

How execute we surname compounds as soon as the cation of variable charge is involved?

Some aspects have an ext then one oxidation number and also when naming a compound these have to be identified. Romannumerals are displayed after the cation in parenthesis( ) to indicate the oxidation number.

To recognize what the oxidation number is, you should use the anion (negative ion) to identify what the hopeful oxidation number is.

Below you can see some of the facets with more than 1 oxidation number.

See more: Where Is The Wrench Icon On Google Chrome Toolbar ? How To Get The Google Tools (The Wrench Icon)

*
Example- Pb(NO3)4 write the surname "lead nitrate". Due to the fact that lead has more than one oxidation state us must number out i m sorry lead we have. Because each nitrate (4 that them) has actually a 1- charge, the Pb should be 4+. So our roman character will it is in (IV).

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

Highlight to expose 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 naming Binary Ionic compound Polyatomic ions Naming through Polyatomic ions Naming through Roman number Formula composing Naming Acids