naming ionic compounds. type i: diatomic writing names from formulas 1.identifying the cation as a...
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NamingIonic Compounds
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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
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Sodium Chloride
Potassium Bromide
Magnesium Iodide
Beryllium Oxide
Calcium Fluoride
Cesium Sulfide
Aluminum Chloride
Zinc Oxide
Silver Phosphide
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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
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Write the formula from the name:
π¨πππΊπ
π©πππͺ
π³πππΊ
π² ππΆπππͺππ
π¨ππ
π΅πππ΅
π²π°
CaO
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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
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Potassium Cyanide
Calcium Carbonate
Sodium Hydroxide
Lithium Sulfite
Cesium Phosphate
Ammonium Chloride
Francium Chlorite
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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
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Writing Formulas from Names (polyatomics)
π¨ππ΅πΆπ
π΄ππΊπΆπ
πͺπΒΏ
πΊπ ΒΏΒΏ
π©π(πͺπ΅ )π
π¨ππ ΒΏΒΏ
ΒΏΒΏπ² π΄ππΆπ
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Transition Metals
β’ For transition metals, there is no easy pattern for which cation they form
β’ If given a formula unit, we can figure out the charge of the cation using the anion
β’ If we are given the name, we will be given a roman numeral- the roman numeral is the charge of the cation!
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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 βide
5b. Name the anion (the polyatomic) with its full nameExample: CoBr2
Cation: cobalt 2+ & anion: 2 bromineName: cobalt (II) bromide
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πͺπ+? π°βπ Copper (I) Iodide
πͺπ+?π π π°βπ Copper (II) Iodide
Cobalt (II) Carbonateπͺπ+?πͺπΆπβπ
π π πͺπ+?π π πͺπΆπβπ Cobalt (III) Carbonate
πΊπ+?πΆβπ Tin (II) Oxide
πΊπ+?π ππΆβπTin (IV) Oxide
π―π+?π π π©π βπ Mercury (II) Bromide
π ππ―π+?π π π©π βπ Mercury (I) Bromide
πΊπ+?πΊβπTin (II) Sulfide
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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
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ππ+ππΆβπ πππΆ
ππ+ππΆβπ ππππΆπ
πͺπ +ππ·πΆπβπ πͺππΒΏΒΏ
πͺπ +ππ·πΆπβπ πͺππ·πΆπ
π΄π+ππ βπ π΄ππ π
π΄π+ππ βπ π΄ππ π
ππ+ππΆπ― βπ ππ ΒΏ
π·π+ππΊπΆπβπ π·πβΒΏΒΏ
π―π+ππΊβπ π―πππΊ