electron dot diagrams - ionic bonding

Question 1

Define the following:

Ionic Bonding

Answer 1

• Involves electrons being transferred between atoms
• The negatively charged Ion (Anion) will take atoms from the positively charged ion (cation) until each valence shell is filled up.
• Metals & Non-metals

Question 2

Answer the following:

What do electron dot diagrams for Ionic bonding show?

Answer 2

• Shows bonds between elements
• Shows valence electrons of each element

8 valence electrons for chloride

Question 3

Answer the following:

How do you draw an electron dot diagram for Ionic bonding?

The 4 steps are?

Answer 3

1. Draw dot diagrams of the starting atoms.
2. Use arrows to show the transfer of electrons.
3. Draw additional atoms if needed.
4. Put brackets around the dot diagrams of the ions and add charges and prefix numbers.

Question 4

Draw on your whiteboard:

Draw an elec D diagram for Magnesium Oxide:

Answer 4

[Mg]^2+ [O]^2-

Hence, Its MgO

They have the same valence charge so they cancel out

Question 5

Draw on your whiteboard:

Draw a D diagram for Magnesium Chloride:

Answer 5

[Mg]^2+ 2[Cl]^1-

Hence, Its MgCl2