1. Write the formula AND the name for the following pairs:
Thursday, November 6, 2014
Objective: Students will use the criss cross method to write Type II Formulas.
Warm-Up:
Write the formula AND the name for the following pairs:
Calcium and Oxygen
Potassium and Permanganate
Agenda:
Writing Type 2 formulas notes and practice

2. Writing Type II Formulas

3. Overview
Type II Ionic bonding occurs between transition metals and non- metals.
Unlike the elements in Groups 1, 2, and 13, transition metals can make multiple ions. Because of this, we use roman numerals to signify the charge.
Iron (III): Fe3+
The roman numeral is enclosed in parenthesis and goes directly behind the element.
Iron (II)

4. Example
Write the ion for the following transition metals:
Iron (II)
Zinc (I)
Copper (III)
Cobalt (II)

5. Writing Formulas From Names
Write the symbol for each element
Find the charges:
The roman numeral is the charge of the cation.
The charge of the anion is found on the periodic table.
Criss Cross Charges and write the formula.
Reduce when necessary.

6. Examples
Tin (II) Sulfide
Gold (III) Phosphide
Iron (II) Sulfate

7. Chromium (II) Chloride Copper (III) Bromide Zinc (II) Nitrite
Your Turn!
Lead (II) Fluoride
Chromium (II) Chloride
Copper (III) Bromide
Zinc (II) Nitrite

8. Brain Break: This is My Nose