Do NowWhich answer represents a

compound?1. He2. Br3. NaCl4. U

Which answer represents a salt?

1. C6H12O6

2. CaBr2

3. Fe4. CH3COOH

Chemical Bonding, Part 2Williamsburg High School for Architecture and Design

Mr. Quinn and Ms. Tom11/13/13

AimCan all atoms satisfy the Octet Rule?

Think Back…To the Octet Rule!

All atoms must have 8 electrons in their outer shell

What about the ones that don’t?

The Rules All elements want to look like noble gasesThey can either gain or lose electrons to get there

Ok, but which one?He: 2Li: 2-1Ne: 2-8

So where did the electrons go?Ar: 2-8-8K: 2-8-8-1Kr: 2-8-18-8

Ar: 2-8-8Br: 2-8-18-7Kr: 2-8-18-8

Practice, Round 1Ne: 2-8Mg: 2-8-2Ar: 2-8-8

He: 2O: 2-6Ne: 2-8

Practice, Round 2Kr: 2-8-18-8Rb: 2-8-18-8-1Xe: 2-8-18-18-8

Kr: 2-8-18-8I: 2-8-18-18-7Xe: 2-8-18-18-8

How about some molecules?He: 2C: 2-4Ne: 2-8

Ne: 2-8Si: 2-8-4Ar: 2-8-8

Nonmetals share electrons with other nonmetals!

From Yesterday…Stealing electrons forms a .

Sharing electrons forms a .

Examples of Molecules:

Regents Practice, Round 1Which symbol represents an atom in the ground state with

the most stable valence electron configuration?1. B2. O3. Li4. Ne

Regents Practice, Round 2Which substance contains bonds that involved the transfer of

electrons from one atom to another?1. CO2

2. NH3

3. KBr4. Cl2

Regents Practice, Round 3When sodium and fluorine combine to produce the compound

NaF, the ions formed have the same electron configuration as atoms of

1. argon, only2. neon, only3. both argon and neon4. neither argon nor neon