Naming Ionic Compounds. Type I: Diatomic Writing Names from Formulas 1.Identifying the cation as a...
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Transcript of Naming Ionic Compounds. Type I: Diatomic Writing Names from Formulas 1.Identifying the cation as a...
NamingIonic Compounds
Type I: DiatomicWriting Names from Formulas1. Identifying the cation as a Group I metal , Group
II metal, Aluminum, Zinc, or Silver
2. Identify the anion as a nonmetal
3. Name the cation (the metal) with its full name
4. Name the anion (the nonmetal) by changing the ending to -ide
Example: NaClcation: sodium anion: chlorineName: sodium chloride
Sodium Chloride
Potassium Bromide
Magnesium Iodide
Beryllium Oxide
Calcium Fluoride
Cesium Sulfide
Aluminum Chloride
Zinc Oxide
Silver Phosphide
Writing Formulas from Names
1. Identify charge of cation (1+, 2+, 3+)
2. Identify charge of anion (1-, 2-, 3-)
3. Balance the charges- criss cross!
4. The charge of the cation becomes the subscript of the anion
5. The charge of the anion becomes the subscript of the cation
6. Reduce subscripts if necessary
Write the formula from the name:
๐จ๐๐๐บ๐
๐ฉ๐๐๐ช
๐ณ๐๐๐บ
๐ฒ ๐๐ถ๐๐๐ช๐๐
๐จ๐๐ญ
๐ต๐๐๐ต
๐ฒ๐ฐ
CaO
Type I: Polyatomic
Writing Names from Formulas
1. Identifying the cation as a Group I metal , Group II metal, Aluminum, Zinc, or Silver
2. Identify the anion as a polyatomic ion
3. Name the cation (the metal) with its full name
4. Name the anion (the polyatomic) with its full name
Example: KOH
cation: potassium & anion: hydroxide
Name: potassium hydroxide
Potassium Cyanide
Calcium Carbonate
Sodium Hydroxide
Lithium Sulfite
Cesium Phosphate
Ammonium Chloride
Francium Chlorite
Writing Formulas from Names (polyatomics)1. Identify charge of cation (1+, 2+, 3+) --(write it over the element name)
2. Identify charge of polyatomic ion (1-, 2-, 3-) --(write it over the polyatomic)
3. Balance the charges- if equal then just one of each
4. The charge of the cation becomes the subscript of the polyatomic- use brackets around polyatomic if more than 1
5. The charge of the polyatomic becomes the subscript of the cation
6. Reduce subscripts if necessary
Writing Formulas from Names (polyatomics)
๐จ๐๐ต๐ถ๐
๐ด๐๐บ๐ถ๐
๐ช๐ยฟ
๐บ๐ ยฟยฟ
๐ฉ๐(๐ช๐ต )๐
๐จ๐๐ ยฟยฟ
ยฟยฟ๐ฒ ๐ด๐๐ถ๐
Transition Metals
โข For transition metals, there is no easy pattern for which cation they form
โข If given a formula unit, we can figure out the charge of the cation using the anion
โข If we are given the name, we will be given a roman numeral- the roman numeral is the charge of the cation!
Type II: Transition MetalsWriting Names from Formulas
1. Identify the cation as a transition metal2. Identify the anion3. Identify the charge of the cation4. Name the cation (the transition metal) with its
full name and the charge of the ion in roman numerals
5a. Name the anion (the nonmetal) by changing the ending to โide
5b. Name the anion (the polyatomic) with its full nameExample: CoBr2
Cation: cobalt 2+ & anion: 2 bromineName: cobalt (II) bromide
๐ช๐+? ๐ฐโ๐ Copper (I) Iodide
๐ช๐+?๐ ๐ ๐ฐโ๐ Copper (II) Iodide
Cobalt (II) Carbonate๐ช๐+?๐ช๐ถ๐โ๐
๐ ๐ ๐ช๐+?๐ ๐ ๐ช๐ถ๐โ๐ Cobalt (III) Carbonate
๐บ๐+?๐ถโ๐ Tin (II) Oxide
๐บ๐+?๐ ๐๐ถโ๐Tin (IV) Oxide
๐ฏ๐+?๐ ๐ ๐ฉ๐ โ๐ Mercury (II) Bromide
๐ ๐๐ฏ๐+?๐ ๐ ๐ฉ๐ โ๐ Mercury (I) Bromide
๐บ๐+?๐บโ๐Tin (II) Sulfide
Writing Formulas from Names (transition metals)
1. Identify charge of cation transition metal (roman numeral) --(write it over the element name)
2. Identify charge of anion or polyatomic ion (1-, 2-, 3-) --(write it over the anion/polyatomic)
3. Balance the charges- if equal then just one of each
4. The charge of the cation becomes the subscript of the anion or (polyatomic- use brackets around polyatomic if more than 1 polyatiomic)
5. The charge of the anion/polyatomic becomes the subscript of the cation
6.Reduce subscripts if necessary
๐ญ๐+๐๐ถโ๐ ๐ญ๐๐ถ
๐ญ๐+๐๐ถโ๐ ๐ญ๐๐๐ถ๐
๐ช๐ +๐๐ท๐ถ๐โ๐ ๐ช๐๐ยฟยฟ
๐ช๐ +๐๐ท๐ถ๐โ๐ ๐ช๐๐ท๐ถ๐
๐ด๐+๐๐ญ โ๐ ๐ด๐๐ญ ๐
๐ด๐+๐๐ญ โ๐ ๐ด๐๐ญ ๐
๐ญ๐+๐๐ถ๐ฏ โ๐ ๐ญ๐ ยฟ
๐ท๐+๐๐บ๐ถ๐โ๐ ๐ท๐โยฟยฟ
๐ฏ๐+๐๐บโ๐ ๐ฏ๐๐๐บ