Nomenclature- Section 4.1 Period #1 Group#5. Binary Ionic Compounds Contains a metal and a nonmetal. Resulting compound= cation and anion. Cation= positive.

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Presentation transcript:

Nomenclature- Section 4.1 Period #1 Group#5

Binary Ionic Compounds Contains a metal and a nonmetal. Resulting compound= cation and anion. Cation= positive charge, when metal loses 1 or more electrons. Anion= negative charge, when nonmetal gains 1 or more electrons. To name a compound, you name the ions.

Binary Ionic Compounds example/problem: 1.What does a Binary Ionic Compound contain? Solution: A metal and a nonmetal.

Type 1 Ionic Compounds The cation is named 1 st in the formula. The anion is named by adding –ide to the 1 st part of the elements name. To write the name for a compound, you combine the ions.

Type 1 Ionic Compounds example/problem: 1.What are the rules for naming Type 1 Binary Ionic Compounds? Solution 

Type 1 Ionic Compound solution:

Type 2 Ionic Compounds Includes a roman numeral in the cation name. The Roman numeral on the ion tells the charge Metals that form 1 cation do not need to be identified by a Roman numeral. Metals that don’t require Roman numeral: Group 1,2,3.

Type 2 Ionic Compound example/problem: 1.What does the Roman numeral in the formula stand for? Solution: It tells the charge on the ion.

Distinguishing between Type 1 and 2 cations Type 1= Group 1 and 2 metals. Type 1= Forms 1 type of cation with the same charge. Type 2= Transition metals. Type 2= Forms 2(or more) cations with different charges. Type 2= Includes Roman numeral in the cation name.

Distinguishing between Type 1 and 2 cations example/problem: 1.What group of metals are always Type 1? Solution: Group 1 and 2

Type 3 Ionic Compounds The 1 st element in the formula is named 1 st, and the full element name is used. The 2 nd element is names as if it were an anion. Prefixes are used to show the numbers of atoms present. Ex: mono- 1. di- 2. tri- 3.

Type 3 Ionic Compounds example/problem: 1.What are the rules for naming Type 3 Binary Ionic Compounds? Solution 

Type 3 Ionic Compound solution:

Quiz: 1.What type of ion is written first in the formula? 2.What is an anion? How is it formed? 3.What types does not require Roman numerals in the formula? 4.What type consists of including a Roman numeral in the cation name? 5.Do you use the prefix mono- to name the first element. Explain and give examples.

Quiz solutions: 1.The cation 2.An anion is a negative ion, formed when it gains electrons from the metal. 3.Type 1 and Type 3 4.Type 2 5.No, because it sounds awkward. Ex: CO is carbon monoxide, not monocarbon monoxide.

References Examples of Binary Ionic Compounds(pg.96), Rules for Naming Type 1 Ionic Compounds(pg.95), Rules for Type 3 Ionic compounds(104), Flow chart of distinguishing Type 1 and 2 cations(103): Pictures: