What is an ionic bond?
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Transcript of What is an ionic bond?
What is an ionic bond?
»Ionic Bond: When an atom donates electrons to another atom
Oxidation Numbers
Ionic Bonds
» The charge must be neutral for these compounds
Ionic Bonds
Neutral Compound
What is Li and O?
Practice
» 1. Sodium + Bromine
» 2. Magnesium + Nitrogen
» 3. Calcium + Sulfur
» 4. Calcium + Chlorine
» 5. Aluminum + Fluorine
NaBr
Mg3N2
CaS
CaCl2
AlF3
Practice
» 1. Potassium + Fluorine » 2. Magnesium + Iodine » 3. Sodium + Oxygen
» 4. Sodium + Chlorine
» 5. Magnesium + Oxygen » 6. Aluminum + Chlorine
KF
MgI2
Na2O
NaCl
MgO
AlCl3
Naming Ionic Compounds
Name Metal
Name Non-Metal
Drop ending and add -ide
Naming Example
NaCl Sodium Chlorine
Sodium Chloride
Naming Practice
» 1. Sodium + Bromine
» 2. Magnesium + Nitrogen
» 3. Calcium + Sulfur
» 4. Calcium + Chlorine
» 5. Aluminum + Fluorine
NaBr
Mg3N2
CaS
CaCl2
AlF3
Sodium Bromide
Magnesium Nitride
Calcium Sulfide
Calcium Chloride
Aluminum Fluoride
Naming Practice
KFMgI2
Na2ONaClMgOAlCl3
Potassium Fluoride
Magnesium Iodide
Sodium Oxide
Sodium ChlorideMagnesium Oxide
Aluminum Chloride
Mixed Practice
» Calcium + Sulfur
» Cesium + Iodine
» Calcium Iodide
» Aluminum Nitride
» Lithium Phosphide
» Indium + Oxygen
» Strontium Iodide
» Rubidium + Bromine
Name…
» KCl» LiF» CaBr2
» BaF2
» Fr3S
» K3P
» BeBr2
» NaCl
Potassium Chloride
Lithium Fluoride
Calcium Bromide
Barium Fluoride
Francium Sulfide
Potassium Phosphide
Beryllium Bromide
Sodium Chloride
Transition Metals
Transition Metals
» Transition Metals have varying valence electrons
» Exceptions: »Ag is always 1+»Zn is always 2+»Cd is always 2+
Why the different charges?
What is the charge of the metal?
» ZnCl2
» FeP» MnBr2
» CuF2
» MnO2
» PbO» SnS2
» Fe2O
23
2
24
2
4
1
Naming Transition Metals
Name Metal
Label Charge Using Roman
Numerals
Drop ending and add -ide
Name Non-Metal
Roman Numerals
1 2
3 4
5 6
7 8
Naming Example
»Name: ZnCl2
˃Zinc (II) Chloride
Write the Compound
» Copper (I) Chloride» Manganese (III) Sulfide» Tin (IV) Oxide» Gallium (III) Nitride» Chromium (III) Sulfide» Lead (II) Fluoride
CuCl
Mn2S3
SnO2
GaNCr2S3
PbF2
Name the Compound
» Cu3N2
» Fe2S3
» ZnCl2
» AgCl» Cd3N2
» MnO2
» NiS
Copper (II) NitrideIron (III) Sulfide
Zinc (II) Chloride
Silver (I) Chloride
Cadmium (II) Nitride
Manganese (IV) Oxide
Nickel (II) Sulfide
Polyatomic Ions
Look Familiar?
» Sulfate» Sulfite» Carbonate» Nitrate» Bicarbonate» Nitrite» Phosphate» Hydroxide » Ammonium » Acetate
Write the Compound
Naming Polyatomic Ions
Name Metal
Label Charge if Necessary
Name Polyatomic
Naming Example
»CuSO3
˃Copper (II) Sulfite
Name these Polyatomic Ions
» Ag2SO4
» MgCO3
» Zn2SO4
» Mg(OH)2
» Nb(NO3)2
» NaC2H3O2
silver (I) sulfatemagnesium carbonate
zinc (I) sulfatemagnesium hydroxide
niobium (II) nitrate
sodium acetate
Write the Compound
» aluminum and sulfate » ammonium and sulfur » barium and hydroxide » magnesium and phosphate » lead(IV) and sulfite » strontium and carbonate » zinc(II) and phosphate » ammonium and oxygen » calcium and nitrate » tungsten(II) and sulfate
Naming Guide
Standard Charge
Metal with Multiple Charge
Polyatomic Ion
Non-metal• Name Non-Metal• Drop Ending• Add -ide
Polyatomic Ion• Name Ion
Properties of Ionic Compounds
» Form Crystals» High melting and boiling points» Hard and brittle» Conduct electricity when dissolved
Properties of Ionic Compounds
Crystal Structure
Metallic Bonds
Electron Sea Model
Metals are not ionic but DO share many properties with ionic compounds.
Properties
Ionic MetallicConductor of Electricity Dissolved X
Malleable XBrittle X
Lustrous XHigh Melting Point X SomeLow Boiling Point
Ductile XPoor Conductor of Heat Solid