CHEMISTRY COMMUNITY

Victor James 4I

asks to write the formula for sodiumbisoxalato(diaqua)ferrate(III) I got Na[Fe(OH2)2(C2O4)] but the answer is Na[Fe(OH2)2(C2O4)2]. in lavelle's slides it said "if ligand has name with di, tri, tetra, or polydentate then use prefixes bis-, tris-, tetrakis-, pentakis-" so i assumed since the...

Victor James 4I

is the oxidation number interchangeable with coordination number? are they the same?

Victor James 4I

so the s-character is a ratio of s orbitals to the other hybridized orbitals?

Victor James 4I

the coefficient tells which energy level the orbitals came from

so if it was 2sp then the s and p orbitals came from the n = 2 energy shell

dont think we need to write it at all on the final tho

Victor James 4I

https://lavelle.chem.ucla.edu/wp-conten ... pounds.pdf

link to the naming compounds thing

Victor James 4I

was this mentioned by Lavelle? I dont think we would have to know this information but I might be wrong

Victor James 4I

I think looking up videos of the molecule shapes wo you can visualize them should help

Victor James 4I

I would jus call my friend Google, he good with these kinds of questions

(C10H16N2O8, btw)

Victor James 4I

im pretty sure the university is closed all day? so that includes any academic things being cancelled but I would be wrong

Victor James 4I

hydrogen bonds don't keep two atoms together in a molecule, they aren't that type of bond. they are a force of attraction between two separate molecules. double bonds are actual covalent bonds that form molecules.

Victor James 4I

Angeline 3E wrote:
Victor James 4I wrote:if all the bonded atoms are the same ( ex. CCl4, CH4) then there is no dipole

does this also apply to trigonal bipyramidal and octahedral?

yep, for those the same thing applies. If they're all the same element around the central atom then its non-polar

Victor James 4I

why would NaCl have a higher boiling point than HCl? (3F.5 part a)

Victor James 4I

if all the bonded atoms are the same ( ex. CCl4, CH4) then there is no dipole

Victor James 4I

hw problems are the best way tbh, and if those confuse you then you can take your questions to a TA

Victor James 4I

u should always calculate formal charge because it can help you find the most stable form of a molecule.

Victor James 4I

VSPR info as in bond angles and the names of the formation?

Victor James 4I

I think the bond lengths are all the same, we should be looking at the dipole moments for the atoms and how they face the dipoles of other atoms

Victor James 4I

polarity has to do with electronegativity differences, polarizability has to do with the ability to distort an ion's electron cloud

Victor James 4I

would these molecules that have canceled charges still have dipole-dipole interactions?

Victor James 4I

the book says CH2Cl2 would have dipole-dipole interactions, but wouldn't the poles on the atoms cancel each other?

Victor James 4I

^^ the pulling of the electrons is sort of similar to the sharing of electrons in a covalent bond, which is why they call it covalent characteristic

Victor James 4I

in general we won have to memorize numbers but I think we might have to know the trend ^^

Victor James 4I

805317518 wrote:I have a follow-up question. How do you apply Δv into the equation? In other words, what is Δv in terms of Δp?

p = mv so Δp = mΔv since mass is constant

Victor James 4I

how does this relate to orbitals?

Victor James 4I

the mass of the electron will be given on the midterm, fyi

Victor James 4I

everything in the 3rd period and above can have more than 8 valence electrons because of the extra sub shells

Victor James 4I

its not specific to those atoms

Victor James 4I

I heard we wouldn't be asked questions like this on the midterm? but dont take my word for it

Victor James 4I

the difference in electronegativity will determine whether or not the bond is ionic or covalent

Victor James 4I

looking at the electronegativity values might help, lavelle said between a difference of 1.5 and 2, bonds aren't definitely covalent or ionic

Victor James 4I

is it the same number of electronic or valence electrons?

Victor James 4I

better safe than sorry, imma put the plus sign

Victor James 4I

also, the l value can always only be as high as the n value minus 1

Victor James 4I

didn't know g existed, thought this was a trick question lmao

Victor James 4I

I personally did them but only on topics that we covered this week that I didn't do last week for homework

Victor James 4I

^^ not sure if that would be too helpful since its asking for the amount of photons given off, not amount of energy in joules

Victor James 4I

wavelength is a distance and you can't have a negative distance. thats how I think about it

Victor James 4I

Can someone identify what exactly the function is?

Victor James 4I

Does the eV unit relate to the work function (can someone also identify what the work function is)?

Victor James 4I

theres a list of constants and equations on lavelle's site with units for the constants

Victor James 4I

I have the 6th edition and the fundamentals match up but I cant find the homework questions for the actual chapters, can someone with the 6th help me with that who has cross-referenced?

Victor James 4I

Avogadro's # is basically just 1 mole

Victor James 4I

I don't think it carries over, but you might want to run this question through a TA

Victor James 4I

pretty sure for every exam we get the periodic table and a sheet of equations

Victor James 4I

I'm having the same issue and I think its because I'm using the 6th edition book instead of the seventh, I'm not sure if the questions are just formatted differently or if they're entirely gone from the 6th edition book.

Victor James 4I

is this a required course material?

Victor James 4I

on his website all it says is 5 posts per week, so your TA is probably right. im posting by tomorrow tho just in case

Victor James 4I

always best to be speific in area u think your ta might not be able to grade or identify things

Victor James 4I

like yall said above me, the turning it in during lecture this friday is a one time thing

Victor James 4I

is anyone else using the 6th edition and know if it's usable?

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