New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Introduction to Molecule Structures

by: Nina Kalkus

Introduction to Molecule Structures CHEM-1070-30

Marketplace > Tulane University > Chemistry > CHEM-1070-30 > Introduction to Molecule Structures
Nina Kalkus

GPA 3.8

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Notes from the lecture about Lewis dot structures and formal charges, with a few examples drawn out
General Chemistry I
Schmehl, Russell
Class Notes
25 ?




Popular in General Chemistry I

Popular in Chemistry

This 4 page Class Notes was uploaded by Nina Kalkus on Monday November 16, 2015. The Class Notes belongs to CHEM-1070-30 at Tulane University taught by Schmehl, Russell in Fall 2015. Since its upload, it has received 16 views. For similar materials see General Chemistry I in Chemistry at Tulane University.

Similar to CHEM-1070-30 at Tulane

Popular in Chemistry


Reviews for Introduction to Molecule Structures


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 11/16/15
Chapter 9, Sections 1-6: Periodic Properties Radii Trends: atomic: decrease across a period (left to right on a row) *up until noble gases, hard to measure their radii ionic: positive charge- radius decreases relative to the neutral negative charge- radius increases relative to the neutral *radius increases as you go down in families (down the column) Ionization Energies: atomic ionization: when you go to the next n level, IE drops He IE (v) Ne N O Be Li B Na 2 Z (nuclear charge) ionic ionization: Na ---> isoelectronic with Ne + Na has much higher IE than Na Mg --> isoelectronic with Na (in general, harder to ionize 1+ ions) Example: IE(kJ) 1 st 2nd 3rd 4th Na: 495 4562 --- --- Mg: 737 1451 7733 --- Al: 577 1817 2745 11,580 ElectronAffinities: Eg+ e --------> E g Either be ΔH==> positive or negative Examples: Li: EA(ElectronAffinity)= -59 kJ/mole (energy is released Be: EA= approximately 0 B,C: EA= negative N: EA= positive F: EA= large, negative Magnetic Behavior: unpaired electrons Transition Metals: Ions of Metals Sc= 4s 3d 1 + 0 1 Sc = 4s 3d Fe= 4s 3d 6 3+ 0 5 Fe = 4s 3d Periodic Table: IE Radius IE Metallic Radius Intro to Chapter 10: Catenation of atoms: Linking of atoms of the same elements together Valence shell electrons: outer shell electrons Phosphorus: 3s 3p ==> 5 valence shell electrons 2 5 - F: 2s 2p ===> 7e linking 5 fluorine to 1 phosphorus to complete the fluorine electrons Chapter 10: Chemical Bonding G.N. Lewis=> valence shell electron interactions between atoms ---> Lewis Dot Structure electrons that are farthest away from nucleus are the ones that will play a part in bonding 1 Na: 3s 2 6 Cl: 3s 3p ==> Na : [Ne] - ==> Cl: [Ar] E system R (Na....Cl) C+H----> CH 4 H 2 2 - C: 2s 2p => 4e in valence shell H C H H: 1s1 (methane not ionic) H Pauling: how do we assess the degree of electron sharing (ionic or covalent) A+B---->A B + - ΔE 1 IP a EA b - + A+B---->AB ΔE 2 EA +aIP b For equal electron sharing, ΔE 1 ΔE 2 IPa+ EA b EA + aP b IPa- EA a IP b EA b Pauling: came up with electronegativity scale X Degree of ionic character in a bond Fr=4 X is proportioned toΔEN X *not including Noble Gases X EN X X EN X X Cs=0.8 X For NaCl---> EN: Na=0.9, Cl=3.0---> ΔE= 2.1---> ionic Lewis Structures: ==> Diatomic Elements: N , 2 ,2F ,2Cl 2 N: 5 valence shell electrons N=N Formal Charge on each element= ideal is for formal charge (FC) = 0 on each element FC= number of valence shell electrons- number of nonbonding electrons- (½)number of bonding pair electrons For N in N 2 5-2- (½)6= 0 For O in O 2 2 4 O: 2s 2p O=O FC on O= 6-4- (½)4= 0 For CO: 2 2 2 4 C: 2s 2p , O: 2s 2p :C=O: FC(C)= 4-2- (½)6= -1 FC(O)= 6-2- (½)6= +1 For NO: N: 2s 2p4 2 4 O: 2s 2p 11 valence shell electrons total N=O FC(N)=0 FC(O)=0 O has 8 electrons (full), N has 7 (incomplete) For CO2: 2 2 2 4 - C: 2s 2p , O: (2s 2p )2----> 16e C + O ------> O=C=O H O 2 H 2O 3 H 2O -3--> 2H + CO 3- 2- - CO 3 4+6(3)+2= 24e O FC=-1 O Resonance Structures FC=-1 C C O O O O FC=0


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on my first study guide!"

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.