Unit 1 Chemical Bonding: Ionic1.2 What is the Octet Rule

AIM: What’s so special about having a full octet?

DO NOW: Draw a Lewis Dot Diagram of Oxygen

What do you think oxygen prefers, to gain 2 more electrons or lose 6 and why?

O

OCTET RULE

• Atom wants to have 8 valence electrons

Definition

XOne valance electron

STABILITY

an atom has a full octet

Atoms bond to become stable

When an atom is

v

Resistant to change

v

It can be achieved when

vSo…

ACTIVITY

• Which atoms are already have 8 valence electrons?

• Which group number is this?

• What group is this called?

Neon XenonArgon Radon

Krypton

v

18

v

NOBLE GASES

v

NOBLE GASES

• Considered ‘INERT’ not moving

• Have 8 valence electrons

• Are all stable

Definition

X

WHY ARE NOBLE GASES STABLE?

• They have max # of valence electrons

• Do not need to react

ANSWER

X

WHY DO ATOMS WANT TO HAVE AN OCTET?

• to become stable!

• To be stable = their goal!

ANSWER

X

NEXT STEPS

• Color the periodic table

• Answer the questions that follow

KEY CONCEPT

NEXTComplete the

INDEPENDENT PRACTICE

When you are done, you may work on the following:

• CHEMISTRY VOCABULARY JOURNAL- you will be allowed to use this on your quizzes and

(some of) your exams