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RADIAL WAVEFUNCTION

I'M GOING TO KILL MYSELF Mon 26 Oct 14:40:48 2020 No.12275005 View Reply Original Report

Quoted By: >>12275048 >>12275300 >>12275409 >>12275476 >>12275642 >>12277017 >>12277117

SOMEONE EXPLAIN THE SIGNIFICANCE OF A RADIAL WAVEFUNCTION PLOT I'M AT MY WITS END HERE EVERYONE TELLS YOU WHAT IT IS BUT WHAT DOES IT MEAN HOW AM I MEANT TO FUCKING DISCUSS IT IF IT MEANS ABSOLUTELY NOTHING

WHAT DOES IT MEAN IF IT GOES NEGATIVE
WHY DO WE EVEN NEED TO KNOW IT HOW IS IT GOING TO HELP US UNDERSTAND ELECTRONS PLEASE HELP ME

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 14:41:54 No.12275010 Report

Quoted By: >>12275409

HELP ME

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 14:42:55 No.12275012 Report

Quoted By: >>12275409

PLEASE THE NOOSE IS AROUND MY NECK

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 14:43:57 No.12275013 Report

Quoted By: >>12275409

THIS IS NOT FUNNY ANYMORE

Anonymous

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Anonymous Mon 26 Oct 2020 14:44:46 No.12275018 Report

Quoted By:

I realised years ago that my cap in chemistry was the radial wave function. Its as far as my 115 IQ could take me. Transferred to Civil Engineering now I cant stop WINNING as I watch you chemfags trying to follow your "passion". You gave me a hearty kek, thanks anon

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 14:44:59 No.12275019 Report

Quoted By: >>12275409

please guys...

Anonymous

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Anonymous Mon 26 Oct 2020 15:02:15 No.12275048 Report

Quoted By: >>12275087 >>12275300

>>12275005

It's a mathematical representation of the probability where the electron is more likely to be

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 15:14:32 No.12275087 Report

Quoted By: >>12275300 >>12275418

>>12275048
ok so how can it be negative
and why is it any different from the rpd graph

Anonymous

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Anonymous Mon 26 Oct 2020 16:22:51 No.12275300 Report

Quoted By: >>12275306 >>12275320 >>12275323

>>12275005
>>12275048
>>12275087
if $\Psi(r,\phi,\theta)$ is the wavefunction, then the probability distribution is $|\Psi(r,\phi,\theta)|^2$ . The || is not the absolute value, but the modulus since the wavefuction is, in general, a complex-valued function.

Anonymous

Anonymous Mon 26 Oct 2020 16:24:34 No.12275306 Report

Quoted By: >>12275327

>>12275300
Probability is $|\Psi(r,\phi,\theta)|^2$ , that is.

Anonymous

Anonymous Mon 26 Oct 2020 16:27:16 No.12275320 Report

Quoted By:

>>12275300
Renders correctly in the preview, but not in the post. Thanks, TeX.
Probability is
$|\Psi(r,\phi,\theta)|^2$

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 16:27:31 No.12275323 Report

Quoted By: >>12275400

>>12275300
so is there anything useful we can derive from the radial wavefunction other than the angular wavefunction itself

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 16:28:33 No.12275327 Report

Quoted By:

>>12275306
thank you kind stranger

Anonymous

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Anonymous Mon 26 Oct 2020 16:45:18 No.12275400 Report

Quoted By:

>>12275323
Not sure what you mean. A complete description of, say, an electron is the wavefunction $\Psi(r,\phi,\theta)$ dependant on both the radius and the angles. Are you referring to the fact that for a spherically symmetric potential(read: a simplified atom) it decomposes into $\Psi(r,\phi,\theta) = A(r) B(\psi,\theta)$ ?
But even considering only the radial wavefunction, it gives you the "radius" of an atom, or a radius where the probability density falls below a certain threshhold. For two or more atoms you are able to find the expected length of molecular bonds etc.

Anonymous

Anonymous Mon 26 Oct 2020 16:46:39 No.12275404 Report

Quoted By:

Wave functions don't represent a probability distribution you retard. You have to take the square integral of them

Anonymous

Anonymous Mon 26 Oct 2020 16:48:50 No.12275409 Report

Quoted By: >>12275436

>>12275005
>>12275010
>>12275012
>>12275013
>>12275019
don't use wojaks again and you'll get an answer next time

Anonymous

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Anonymous Mon 26 Oct 2020 16:52:00 No.12275418 Report

Quoted By:

>>12275087
So I'm just a mere undergrad (and a math major at that), but I've taken some pchem and whatnot. The negative part comes into play with things like bonding and antibonding orbitals, constructive/destructive interference of the wavefunctions. You need to take the modulus before it represents a probability. There's no negative probabilities going on. In pic related the red/blue are negative/positive. This is simplistic but its my understanding, maybe it'll help.

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 16:58:32 No.12275436 Report

Quoted By:

>>12275409
>don't use wojaks again and you'll get an answer next time

Anonymous

Anonymous Mon 26 Oct 2020 17:09:14 No.12275476 Report

Quoted By: >>12275506 >>12275524 >>12275642 >>12275659

>>12275005
>look up "what is the domain and codomain of the wave function
>no useful results
>get shit like this instead: "the wavefunction yields the states of the electron
AND JUST WHAT THE FUCK ARE THOSE STATES SUPPOSED TO BE
WHY IS IT SO FUCKING HARD TO GET SUCH BASIC INFORMATION AHHHHHHHHHHHHHHHH?

Anonymous

Anonymous Mon 26 Oct 2020 17:18:38 No.12275506 Report

Quoted By: >>12276998

>>12275476
Actually forget about the domain, that's just (x,y,z,t). But I truly have no idea what the codomain is supposed to be.

Anonymous

Anonymous Mon 26 Oct 2020 17:24:26 No.12275524 Report

Quoted By: >>12275596

>>12275476

This is how pure math rots your brain and keeps you from ever doing practical science

Anonymous

Anonymous Mon 26 Oct 2020 17:43:40 No.12275596 Report

Quoted By:

>>12275524
How could anyone reasonably say that they understand this topic if they can't answer a basic question like this?

Anonymous

Anonymous Mon 26 Oct 2020 17:55:25 No.12275642 Report

Quoted By: >>12275659 >>12275797

>>12275005
>>12275476
Do you know anything about quantum mechanics? Do you know anything about probability theory? How much do you know? And how much do you want to know?

Anonymous

Anonymous Mon 26 Oct 2020 18:02:10 No.12275659 Report

Quoted By: >>12275678

>>12275642
I'm >>12275476, and just learning about this for a general chemistry course. And I understand very little, and would just like to know what the precise output of the wave equation is.

Anonymous

Anonymous Mon 26 Oct 2020 18:07:43 No.12275678 Report

Quoted By: >>12275720 >>12275794

>>12275659
>the precise output of the wave function
It's the probability amplitude that the electron is located at (x,y,z) at time t.
>inb4 what is probability amplitude
A complex number. If you take the square of its absolute value, you get the probability density.

Anonymous

Anonymous Mon 26 Oct 2020 18:17:48 No.12275720 Report

Quoted By:

>>12275678
And now I see why it was stupid for me to ask for the codomain. Thank you anon. I don't really have a conception of what probability amplitude means, but if it's so closely related to probability density I suppose it's not too much of an issue.

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 18:35:11 No.12275794 Report

Quoted By:

>>12275678
thank you for the help

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 18:36:20 No.12275797 Report

Quoted By: >>12275863

>>12275642
i dont know much im in a nigger chemistry course where everyone is retarded because i didnt know what i was getting myself into and now im trying to study ahead a year or two to try to transfer into one of the better universities in my country

Anonymous

Anonymous Mon 26 Oct 2020 18:56:12 No.12275863 Report

Quoted By: >>12275993

>>12275797
If you really want to know what a wave function is and how it relates to chemistry, you need to learn quantum mechanics. Until then, you just have to deal with not really understanding what you're doing or talking about.

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I'M GOING TO KILL MYSELF Mon 26 Oct 2020 19:35:29 No.12275993 Report

Quoted By:

>>12275863
ill work my way up to it thanks anon

Anonymous

Anonymous Mon 26 Oct 2020 20:48:26 No.12276265 Report

Quoted By:

Think of it like a fluid with varying density. The radial wave function gives you the radial density of that fluid.
This concept is called "electronium" of it helps you.

Anonymous

Anonymous Tue 27 Oct 2020 00:29:19 No.12276998 Report

Quoted By:

>>12275506
C

Anonymous

Anonymous Tue 27 Oct 2020 00:33:52 No.12277017 Report

Quoted By: >>12277098

>>12275005
I feel like this every time I attempt to learn anything about physics. It seems that so much is either glossed over, or we simply don’t know “why” things are a certain way, just “that” they are and we simply have to accept this at face value. It drives me mad.

Anonymous

Anonymous Tue 27 Oct 2020 00:40:39 No.12277036 Report

Quoted By:

Good thread.

Anonymous

Anonymous Tue 27 Oct 2020 00:59:31 No.12277098 Report

Quoted By:

>>12277017
Yep, INTJ chads like us should just stick to math and engineering. Leave science to those who can live with shaky foundations.

Anonymous

Anonymous Tue 27 Oct 2020 01:07:28 No.12277117 Report

Quoted By:

>>12275005

There's nothing to understand, op,. It's just bullshit. Schrodinger was attempting to do a derivation for charge density. The wave function originally was charge density, a reasonable quantity. Later it was changed to the ridiculous Complex probability amplitude. Which is horseshit, but has made a few Right predictions. Don't read into it because it's not real

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