Ionic Compounds Introduction

Multiple Choice

Cations are positive ions and nonmetals.

• True

• False

Multiple Choice

Predict the formula of the compounds formed from below:

Ga⁺³ and O^-2

• $$Ga_3O_2$$  

• $$Ga_2O_3$$  

• $$O_3Ga_2$$  

• $$O_2Ga_3$$  

Multiple Choice

Predict the formula of the compounds formed from the ions below:

Mg²⁺ and Cl^-

• $$MgCl_2$$  

• $$Mg_2Cl_{ }$$  

• $$Cl_2Mg_{ }$$  

• $$ClMg_2$$  

Multiple Choice

Predict the formula of the compounds formed from the ions below:

K⁺ and O^2-

• $$O_2K$$  

• $$OK_2$$  

• $$K_2O_{ }$$  

• $$KO_2$$  

Multiple Choice

Predict the formula of the compounds formed from the ions below:

Fe³⁺ and S^2-

• $$Fe_2S_3$$  

• $$Fe_3S_2$$  

• $$S_2Fe_{ }$$  

• $$S_3Fe_2$$  

B. Ionic Names

1. Write the names of both elements, cation first. (the metal is the cation)

2. Change the anion’s (nonmetals) ending to -ide.

B. Ionic Names Practice

• NaBr

• Be₃N₂

• K₃P

• BeO

• Mn₂O₇

• AlN

• MgCl₂

B. Ionic Names Practice

• NaBr

  • sodium bromide

• Be₃N₂

  • beryllium nitride

• K₃P

  • potassium phosphide

• BeO

  • Beryllium oxide

• Mn₂O₇

  • manganese (VII) oxide

• AlN

  • aluminum nitride

• MgCl₂

  • magnesium chloride

Multiple Choice

LiBr is called

• lithium bromine

• lithium (I) bromine

• lithium bromide

• lithuim (I) bromide

Multiple Choice

When naming a compound, which of these is written first?

• Metal

• Nonmetal

• Anion

• Cation

Multiple Choice

Name the following ionic compound: BeCl₂

• beryllium chlorine

• beryllium II chloride

• beryllium chloride

• beryllium dichloride

Multiple Choice

Which of these combinations is an ionic compound made of?

• Metal and Metal

• Nonmetal and Nonmetal

• Metal and Nonmetal

• Cation and Cation

B. Ionic Formulas

1. Write each element symbol.  Put the cation first. (metal)

2. Look up the oxidation numbers for each element and write it as a superscript.

3. Overall charge must equal zero.

   1. If charges cancel, just write the symbols.

B. Ionic Formulas (practice)

• potassium chloride

  • K⁺  Cl^-     Þ  KCl

• magnesium nitride

  • Mg⁺²  N^-3     Þ  Mg₃N₂

B. Ionic Formulas (practice)

• potassium chloride

  • K⁺  Cl^-     Þ  KCl

• magnesium nitride

  • Mg⁺²  N^-3     Þ  Mg₃N₂

Multiple Choice

Li⁺ and P^3- create...

• Li₃P

• LiP₃

• LiP

• Li₂P

Multiple Choice

What is the formula for Magnesium chloride?

• MgCl

• Mg₂Cl

• MgCl₂

• Mg₂Cl₃

Multiple Choice

What is the correct formula for the compound, lithium oxide?

• LiO

• Li₂O

• LiO₂

• Li₂O₂

Multiple Choice

How do the following two elements bond together?
Na¹⁺  F^1-         

• NaF

• NaF₃

• Na₃F

• Na₁F₂

Multiple Choice

How do the following two elements bond together?
K¹⁺  S^2- 

• KS

• K₈S

• K₆S₃

• K₂S