Ionic Bonding

What are the rings called? 

• Shells or energy levels

• Circles

Fill in the blank: Every atom wants to have a(n) _______________.

• Even number of electrons

• Valence shell with 6 electrons

• Full valence shell

How many valence electrons does chlorine have?

• 1

• 5

• 7

How many valence electrons do they both have now?

• 10

• 8

What is the net charge on the sodium ion?

• +1

• -1

The chlorine atom becomes an anion with a ______ charge.

• negative 

• positive

The sodium atom becomes a cation with a __________ charge.

• negative

• positive

Why do they transfer electrons?

• So that they both end up with full valence shells.

• Who knows.