periodic table ions and oxidation numbers. ions and oxidation numbers: at the conclusion of our time...
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 ion3. Define an oxidation number4. 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
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Tin - Sn
Cation – ion with a positive chargeIf a neutral atom loses one or more
electrons it becomes a cation.
Na 11 protons11 electrons
Na+ 11 protons10 electrons
Anion – ion with a negative chargeIf a neutral atom gains one or more electronsit becomes an anion.
Cl 17 protons17 electrons
Cl-17 protons18 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
ION
-
A monatomic ion contains only one atom
A polyatomic ion contains more than one atom
Na+, Cl-, Ca2+, O2-, Al3+, N3-
OH-, CN-, NH4+, NO3
-
Assigning Oxidation Numbers
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 ion3. Define an oxidation number4. List the standard oxidation number for the
periodic families
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Radium - Ra
An atom has 14 protons, 18 electrons and 20 neutrons. The element (or ion) is …
0% 0% 0% 0%0%0%0%
1. Si
2. Mg
3. Ar
4. Si4-
5. Si4+
6. Ar4-
7. Ar4+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
An atom has 15 protons, 10 electrons and 17 neutrons. What element (or ion) is it?
0% 0% 0%0%0%0%
1. Ne
2. P
3. Ne5+
4. P5+
5. Ne5-
6. P5-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
How many total electrons does the following ion have? F-
0% 0% 0%0%0%0%
1. One
2. Two
3. Seven
4. Eight
5. Nine
6. Ten
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Na+ is called a(n)
0% 0% 0%0%0%
1. Cution
2. Anion
3. Polyatomic ion
4. Monatomic ion
5. Ipad
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
NO- is called a(n)
0% 0% 0%0%0%
1. Cation
2. Antion
3. Polyatomic ion
4. Monatomic ion
5. Ionion
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
How many total electrons does the following ion have? O2-
0% 0% 0%0%0%0%
1. One
2. Two
3. Seven
4. Eight
5. Nine
6. Ten
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
How many total electrons does the following ion have? Mg2+
0% 0% 0%0%0%0%
1. One
2. Two
3. Seven
4. Eight
5. Nine
6. Ten
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
N3- is a(n)?
0% 0%0%0%
1. anion
2. cation
3. diatomic molecule
4. polyatomic ion
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
NH4+ is a(n)?
0% 0%0%0%
1. anion
2. cution
3. diatomic molecule
4. polyatomic ion
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Na+ is a(n)?
0% 0%0%0%
1. anion
2. cation
3. diatomic molecule
4. polyatomic ion
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30