CHEMISTRY COMMUNITY

jmtz1I

The coordination number means the number of bonds on the central atom.

jmtz1I

How do you determine the coordination number if we aren't given a ligand?

jmtz1I

I think that should be it. Lavelle didn't go over anything else for hybridization.

jmtz1I

It will be a cumulative final but I believe that it will focus more on the topics we learned after test 2!

jmtz1I

I typically watch the organic chemistry tutor or khan academy depending on the topic.

jmtz1I

I would say doing the homework problems from the outlines, as well as going over testing material, attending plf/step-up sessions. I also love watching youtube videos because they guide you through the material.

jmtz1I

I don't think it matters. I've seen people do both, in my plf sessions they do use the subscript though.

jmtz1I

I would say more than the midterm but just to be sure you can also email your TA or check out the class website.

jmtz1I

No, it shouldn't.

jmtz1I

Yes, you do count it because it is an area of electron density.

jmtz1I

From what I've learned in PLF sessions, doing the lewis structures seems to be the best way.

jmtz1I

Lavelle said that Hybridization was not going to be on test 2. From what I remember the topics for test 2 will be intermolecular forces, hydrogen bonding, and molecular geometry. He also stated that sigma and pi bonds will be included as he will go over it during Monday's lecture.

jmtz1I

Lone pairs repel; therefore, compressing and causing the angle to become smaller. For example, H2O has one lone pair that causes a bent shape with an angle less than 109.5.

jmtz1I

Yes! I recommend creating a quizlet with electronic geometry, molecular geometry, and bond angles.

jmtz1I

On Friday, Lavelle said that Hybridization was not going to be on test 2. From what I remember the topics for test 2 will be intermolecular forces, hydrogen bonding, and molecular geometry.

jmtz1I

The best thing is to have a formal charge of 0, but if not my TA stated to find the lowest possible charge.

jmtz1I

Shorter bond lengths are stronger because the atoms are closer to each other, therefore making it hard to break them apart. On the other hand, long bond lengths are weaker as they are farther apart.

jmtz1I

Electronegativity decreases as we go down a column because the distance between the nucleus and the electrons increases, meaning that the electrons are far from the nucleus.

jmtz1I

I would recommend watching Lavelle's video on the photoelectric effect on the website. https://lavelle.chem.ucla.edu/wp-conten ... t.wmv.html

jmtz1I

The atom with the least electronegativity is the one that is the central atom.

jmtz1I

Y'all know of any mnemonics for the periodic table trends? to help remember the trends across the table? thank youuuu

jmtz1I

From what Lavelle said, you should pick the atom with the lowest ionization energy to be the central atom.

jmtz1I

There should be a total of 8 valence electrons. As they stated, the octet rule.

jmtz1I

I think he's going to tell us more about it tomorrow during lecture.

jmtz1I

I think that any problem going over the topics we're learning at the moment is acceptable and the ones they give us on the oulines. If anything just email your TA :)

jmtz1I

I've noticed that Lavelle uses those two terms interchangeably as well. But in my plf session, they described work function as the energy needed to remove an electron from a solid surface.

jmtz1I

having trouble understanding how we're supposed to start in order to solve. 1A. 9 "A college student recently had a busy day. Each of the student’s activities on that day (reading, having a dental x-ray, making popcorn in a microwave oven, and getting a suntan) involved radiation from a differe...

jmtz1I

Can someone please explain how the orbital diagram works? As in the arrows and how we know if it spins up/down? thank you so much!

jmtz1I

I like to always remember that they have an inverse relationship. So if the wavelength is short, frequency is high and vice versa (long wavelength=low frequency)

jmtz1I

I would definitely recommend going to plf sessions or the step-up sessions they hold at covel. Also, just planning your day and finding time to just study on Chem is essential.

CHEMISTRY COMMUNITY

Search found 30 matches

Re: Coordination Numbers and Ligands

Determining Coordination number

Re: Hybridization

Re: Final Exam?

Re: Final Studying

Re: Any tips on how to catch up in this class?

Re: AXE Format

Re: final exam

Re: Resonance and Naming

Re: hybridization number

Re: AXE Formula

Re: Test 2

Re: Lone Pairs

Re: vsepr angles

Re: Test 2

Re: Formal charge

Re: Short bond lengths vs long bond lengths

Re: electronegativity trend

Re: Photoelectric effect

Re: central atom

Mnemonics for the period table trends

Re: Choosing the central atom

Re: Lewis symbols

Re: Midterm

Re: Week 5 Homework

Re: Work Function

Homework 1A.9

Electron Configuration and orbital diagram

Re: homework 1A.3

Re: Advice for studying