Periodic Table Ions and Oxidation Numbers. Ions and Oxidation Numbers: At the conclusion of our time together, you should be able to: 1. Identify an ion.

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Presentation transcript:

Periodic Table Ions and Oxidation Numbers

Ions and Oxidation Numbers: At the conclusion of our time together, you should be able to: 1. Identify an ion as a cation, anion, monatomic or polyatomic 2. Explain the charge of an ion 3. Define an oxidation number 4. List the standard oxidation number for the periodic families

An ion is an atom, or group of atoms, that has a net positive or negative charge. Ions

The slightly overweight guy wished he was… Tin - Sn

Cation – ion with a positive charge If a neutral atom loses one or more electrons it becomes a cation. Na 11 protons 11 electrons Na + 11 protons 10 electrons

Anion – ion with a negative charge If a neutral atom gains one or more electrons it becomes an anion. Cl 17 protons 17 electrons Cl - 17 protons 18 electrons

Cation an ion with a positive charge. Anion an ion with a Negative charge. Cation an ion with a positive charge. Anion an ion with a Negative charge. A I O N -

A monatomic ion contains only one atom A polyatomic ion contains more than one atom Na +, Cl -, Ca 2+, O 2-, Al 3+, N 3- OH -, CN -, NH 4 +, NO 3 -

Assigning Oxidation Numbers

Alkali Metals = +1

Assigning Oxidation Numbers Alkaline Earth Metals = +2

Assigning Oxidation Numbers Group 13 Boron Group = +3

Assigning Oxidation Numbers Group 15 Nonmetals = -3

Assigning Oxidation Numbers Group 16 Nonmetals = -2

Assigning Oxidation Numbers Halogens = -1

Assigning Oxidation Numbers Transition and Post Transition Metals generally have multiple oxidation numbers

Ions and Oxidation Numbers: Let’s see if you can: 1. Identify an ion as a cation, anion, monatomic or polyatomic 2. Explain the charge of an ion 3. Define an oxidation number 4. List the standard oxidation number for the periodic families

What the police did with the underage drinking parties! Radium - Ra

An atom has 14 protons, 18 electrons and 20 neutrons. The element (or ion) is … 1. Si 2. Mg 3. Ar 4. Si Si Ar Ar

An atom has 15 protons, 10 electrons and 17 neutrons. What element (or ion) is it? 1. Ne 2. P 3. Ne P Ne P

How many total electrons does the following ion have? F - 1. One 2. Two 3. Seven 4. Eight 5. Nine 6. Ten

Na + is called a(n) 1. Cution 2. Anion 3. Polyatomic ion 4. Monatomic ion 5. Ipad

NO - is called a(n) 1. Cation 2. Antion 3. Polyatomic ion 4. Monatomic ion 5. Ionion

How many total electrons does the following ion have? O One 2. Two 3. Seven 4. Eight 5. Nine 6. Ten

How many total electrons does the following ion have? Mg One 2. Two 3. Seven 4. Eight 5. Nine 6. Ten

N 3- is a(n)? 1. anion 2. cation 3. diatomic molecule 4. polyatomic ion

NH 4 + is a(n)? 1. anion 2. cution 3. diatomic molecule 4. polyatomic ion

Na + is a(n)? 1. anion 2. cation 3. diatomic molecule 4. polyatomic ion