105 F11 Lecture 18 cmpd

105 F11 Lecture 18 cmpd - belonging to host atom. • Bonds...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 105
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The proper name of SO32- is A. sulfate B. sulfide C. sulfurous D. sulfitous E. sulfite
Background image of page 2
Business Student Survival Session Ø W111 4pm today Taking charge of your student career & memory *Exam 1 issues must be resolved by tomorrow.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
O S O or O-S=O O S O or O=S-O SO2 gas is released before volcanos erupt. Draw the Lewis structure for SO2 One Lewis structure is not accurate enough. Multiple “resonance” structures are used to describe the molecule. O=S-O O-S=O
Background image of page 4
Resonance Draw the Lewis structure of ozone (O3): The electrons are delocalized over more than one bond .
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Resonance in a Fire Ant sting Electrons can move among the two oxygen- carbon bonds. They are not localized , but delocalized.
Background image of page 6
Benzene Resonance Kekulé
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Draw the structure for CNO- Which one is right? Are e-’s distributed properly? Formal charge ” helps us decide! For each atom find: Formal charge = valence – assigned e- Where assigned e-’s are: Unshared e-’s
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 12
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 14
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: belonging to host atom. • Bonds – half the e- pair belongs to each atom participating TIPS: Choose structure w/ lowest formal charges Negative formal charges goes w/ most EN A. B. C. D. I don’t know-2 +1-1-1 Draw the Lewis structure for CO2 Exceptions to the octet rule: Odd Number of Electrons Though rare, unstable, and reactive, ions & molecules w/ an odd # of e-’s do occur. Ø NO Ø O2-Draw the Lewis structure of BF3 • Using octets makes boron -1, and fluorine is +1. Is this bad? Fewer than eight valence electrons More Than Eight Electrons - PCl5 • Some atoms can expand their octet if they are on the 3rd row or below. Ø Theories: • Size • d orbitals Draw PO43-More Than Eight Electrons • Moral of the story: If the central atom is on the 3rd row (or below), and some formal charges are eliminated by expanding its octet, do it....
View Full Document

This note was uploaded on 02/28/2012 for the course CHEM 105 taught by Professor Macedone during the Fall '07 term at BYU.

Page1 / 14

105 F11 Lecture 18 cmpd - belonging to host atom. • Bonds...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online