Name: __________________________ Date: _______________ Period: ___________
IONIC BONDING BASICS
PART A: Show the transfer of electrons needed to form the ionic bond for each given elements.
1. Magnesium + Iodine
3. Aluminum + Chlorine
2. Beryllium + Chlorine
4. Potassium + Nitride
NOTES:
NAMING IONIC COMPOUNS
1. Name the cation (+) first
2. Name the anion (-) second and change the ending to –ide
EXAMPLE: CAF2 the cation is Calcium, the anion is Fluorine, but you need to change the
ending to –ide therefore it changes to fluoride
YOUR ANSWER IS CALCIUM FLUORIDE
FORMULA WRITING
1. Cross the oxidation numbers to get the final formula (TO GET SUBSCRIPTS)
2. Do not cross the (+) sign or the (-) Signs, only cross the numbers
EXAMPLE: Ca+2 F-1
Ca1F2
YOU SHOULD NEVER SHOW A 1
IN THE FINAL FORMULA,
THEREFORE YOUR FINAL
ANSWER IS CaF2
PART B: Using the notes above, write the Formula and the Name for the ions given in Part A. Show your work
to get the final formula (crossing of charges)
5.
Magnesium + Iodine
Formula: ________________________________ Name: ________________________________
6.
Beryllium + Chlorine
Formula: ________________________________ Name: ________________________________
7.
Aluminum + Chlorine
Formula: ________________________________ Name: ________________________________
8.
Potassium + Nitride
Formula: ________________________________ Name: ________________________________
NOTES:
Polyatomic ion: are groups of two or more elements that have an oxidation # associated with them as a group
Examples:
NH4+1
NO-3
Roman Numeral: Roman numerals indicate the ion’s charge
Used when the ion has more than one oxidation state (Transition elements)
Examples:
Copper (II)  Cu+2
Cobalt (III)  Co+3
Part C: From the following list, circle the polyatomic ions
C+4
PO4-3
OH-
K+
HF-
Part D: Given the following ions with Roman numerals, write the symbol with the oxidation number
9. Manganese (II) _______________________________
10. Manganese (III) ______________________________
11. Nickel (IV) _________________________________
12. Gold (I) ____________________________________