Recent content by silimay

Why is Fe(bipy)3 low spin, whereas Fe(bipy)2(H2O) high spin?

We have been doing a lot of d-splitting diagrams in my inorganic chemistry class. I was wondering... I am always confused how to tell whether an orbital is a sigma orbital or a pi orbital. For instance for trigonal bipyramidal, how do you know that the two lowest are pi, the next two are pi...

I have a question about something that has been bothering me for a while... In all of my chemistry classes, my professors have always told me that it is impossible to predict which way a chiral molecule will rotate plane-polarized light (i.e., you will see if a molecule is D or L, but, saying...

mmm, I didn't :) Thanks so much :) I know it was smth silly I wasn't paying attention to ^_^ It's not dependent on theta or phi, so I should just multiply it by 4 pi after doing the integral in r, right?

Homework Statement I have a question on my quantum pset relating to calculating <p^2/2m> and <-e^2/r> for the first two spherically symmetric states of the hydrogen atom (in 3D). The Attempt at a Solution I started out trying to calculate the averages with \psi ... something like, for...

So I was reading from my quantum book (Gasiorowicz) and I ame across this sentence: [p^2, x] = p [p, x] + [p, x] p = \frac{2\hbar}{i} p I don't understand this. I know that p = -i \hbar \frac{\partial}{\partial x} , but I can't see how to get that expression...I just come up with...

Thanks so much for your help =) =) =) I understand it now.

Sorry... my message got posted by mistake before I started typing. Here is what I was going to say: I'm having a problem just understanding something from my quantum book. They're deriving something to do with a wave packet with the Schrodinger equation, and they have the equation of a wave...

I have a question about bound states as they relate to a question on my homework... From what I can see, bound states in quantum mechanics are associated with energies that are discrete, not continuous. I don't really understand why... In my homework problem we are given a set of potential...

I am confused about a proof of the Schwarz inequality in my book... Homework Statement \left(\sum_{j=1}^n |a_j \overline{b}_j |\right)^2\leq \left(\sum_{j=1}^n |a_j|^2\right) \left(\sum_{j=1}^n |b_j|^2\right). The Attempt at a Solution In the proof in my book (Rudin) it sets A =...

Homework Statement Using the values of \hbar, the electron mass and the electron charge, find the characteristic value of the electric field in an atom, in statvolts / cm (cgs). Homework Equations r_n = \frac{n^2 h^2}{4 {\pi}^2 m e^2} The Attempt at a Solution So I wasn't really...

JohnF - Thanks, I think I understand better. That proof makes sense to me. StatusX - I don't understand how q must divide m if it divides m^n.

StatusX - Thanks so much for the help. If the factor divides m^n, how do I show that it also divides m? EnumaElish - I am assuming m and p are positive integers with no common factors. So yeah, I have assumed q is rational. I am trying to prove that it cannot be rational (unless k is an nth power).

Homework Statement Let n and k be positive integers. Show that k^{1/n} is either a positive integer or an irrational number. The Attempt at a Solution I set q = k^{1/n}. Then I set q = \frac{m}{p} . (Where m and p don't have common factors.) Then m^n = k * p^n . So then k is a factor...

Ahh...okay...so it was just a bit arbitrary, but it got it proved. Thank you so much :)