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In this course, you will learn about ions - cations and anions, monatomic, and polyatomic. Understand oxidation numbers and the standard values for periodic families. Dive into the world of ion charges and oxidation states! ###
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Periodic Table Ions and Oxidation Numbers
Ions and Oxidation Numbers:At the conclusion of our time together, you should be able to: • Identify an ion as a cation, anion, monatomic or polyatomic • Explain the charge of an ion • Define an oxidation number • List the standard oxidation number for the periodic families
Ions An ion is an atom, or group of atoms, that has a net positive or negative charge.
11 protons 11 electrons 11 protons 10 electrons Na+ Na Cation – ion with a positive charge If a neutral atom loses one or more electrons it becomes a cation.
17 protons 18 electrons 17 protons 17 electrons Cl- Cl Anion – ion with a negative charge If a neutral atom gains one or more electrons it becomes an anion.
Cation an ion with a positivecharge. Anion an ion with a Negativecharge. - A I O N
A monatomic ion contains only one atom Na+, Cl-, Ca2+, O2-, Al3+, N3- A polyatomic ion contains more than one atom OH-, CN-, NH4+, NO3-
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: • Identify an ion as a cation, anion, monatomic or polyatomic • Explain the charge of an ion • Define an oxidation number • 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 … Si Mg Ar Si4- Si4+ Ar4- Ar4+
An atom has 15 protons, 10 electrons and 17 neutrons. What element (or ion) is it? Ne P Ne5+ P5+ Ne5- P5-
How many total electrons does the following ion have? F- • One • Two • Seven • Eight • Nine • Ten
Na+ is called a(n) • Cution • Anion • Polyatomic ion • Monatomic ion • Ipad
NO- is called a(n) • Cation • Antion • Polyatomic ion • Monatomic ion • Ionion
How many total electrons does the following ion have? O2- • One • Two • Seven • Eight • Nine • Ten
How many total electrons does the following ion have? Mg2+ • One • Two • Seven • Eight • Nine • Ten
N3- is a(n)? • anion • cation • diatomic molecule • polyatomic ion
NH4+is a(n)? • anion • cution • diatomic molecule • polyatomic ion
Na+ is a(n)? • anion • cation • diatomic molecule • polyatomic ion