Chemistry Chapter 6

being like noble gas

yupp

nonpolar and polar

• equal or most equal sharing of electrons 
• X - Y

• unequal sharing of electrons with slight separation of charge 
• 

ability of an atom to attract shared electrons in a bond 

• Trend L to R ↑
•          Bottom to Top ↑

Dipole moment

• (μ)
• shift in electron density 

H -- Cl 

• ------>
• +      -

arrow where more electronegative

usually least electronegative BUT hydrogen is NEVER the centre

• distribute remaining electrons on OUTSIDE first to give an octet then work way inside 
• and if central doesn't have octet... make that shit work somehow with double and triple and quad bonds

NOT actual charge, just a way to track electrons

• 1. All nonbinding electrons
• 2. Half of bonding electrons 

basically bonds count as one and each free electron also counts as one

• 1. choose structure when sum of charge = charge on molecule 
• 2. choose struture with small formal charges (0, +/- 1) not +/- 2, +/- 3 etc 
• 3. choose structures when most EN atom has a negative formal charge

More than one way to draw a lewis structure that is correct

don't for get to add <---> thingy

• Incomplete Octet
• exception: H needs 2; B needs 6; Be needs 4

• Odd number of Valence
• ie Nitrogen 

• Expanded Octet 
• ie SF6