1. How to Make Ionic Bonds

2. Ionic Bonds
Remember the Octet Rule? How many electrons do atoms need to be happy and stable?
Ionic bonds are created when electrons are transferred (given away or taken/accepted)
Ionic bonds are created by combining metals and nonmetals

3. Directions 1. Find your elements on the periodic table Potassium
Bromine 1 2 14 15 16 18 13 17
1. Find your elements on the periodic table

4. Potassium = K Bromine = Br 2. Write the symbol for each element1 2 14 15 16 18 13 17
Bromine = Br
3. Look at the group number to determine the number of valence electrons

5. K
4. Draw the valence electrons on a counter-clockwise direction for each element Br

6. K Br 5. Figure out the number of electrons gained or lost
K wants to lose 1 electron
5. Figure out the number of electrons gained or lost K Br
Br needs 1 electron

7. 6. Draw arrows to show the transfer of electronsBr K
7. Write the charges for each element and the chemical formula for the reaction
K1+ + Br 1-  KBr

8. Want to see another? Let’s try Magnesium and Iodine
magnesium= Mg iodine= I
1. Find the elements on the periodic table 1 2 14 15 16 18 13 17
2 valence electrons
7 valence electrons
2. Write the symbols
3. Look at the group number to find the valence electrons I
Mg loses 2
I gains 1
4. Draw the valence in electrons in a counter-clockwise direction Mg I
5. Figure out the electrons gained or lost
6. Draw the arrows to show the transfer
Mg2+ + I1- 2  MgI2
7. Write the charges and the formula

9. Magnesium and oxygen Magnesium oxide Now you try . . . .
To name ionic bonds, take the name of the metal as the first word. For the second word, take the name of the nonmetal and add –ide on the end
Magnesium oxide

10. Now you try
Sodium and chlorine
Sodium chloride

11. Now you try
aluminum and chlorine
Aluminum chloride

12. Ionic Bond Homework For each set of elements:
Draw the Lewis structures for each atom.
Draw arrows to show the transfer of electrons.
Write the charge for each ion and the chemical formula.
Complete the following
1. Potassium + Iodine
2. Sodium + Oxygen
3. Lithium + Nitrogen
4. Potassium + Fluorine
5. Calcium + Chlorine
6. Lead + Sulfur

13. Ionic Bond Homework ANSWERS
1. Potassium + Iodine

14. Ionic Bond Homework ANSWERS
2. Sodium + Oxygen

15. Ionic Bond Homework ANSWERS
3. Lithium + Nitrogen

16. Ionic Bond Homework ANSWERS
4. Potassium + Fluorine

17. Ionic Bond Homework ANSWERS
5. Calcium + Chlorine

18. Ionic Bond Homework ANSWERS
6. Lead + Sulfur