Metallic Bonding
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- Опубликовано: 20 авг 2013
- 021 - Metallic Bonding
In this video Paul Andersen explains how metallic bonding structure creates the different properties of metals. The electron sea model explains how the positive nuclei are locked into a negative sea of delocalized electrons. This sharing of electrons creates metals that are good conductors, malleable, ductile and non-volatile. A shell model can be used to explain certain properties of metals (like melting point).
Music Attribution
Title: String Theory
Artist: Herman Jolly
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"File:A Plug.jpg." Wikipedia, the Free Encyclopedia. Accessed August 15, 2013. en.wikipedia.org/wiki/File:A_p....
"File:Blacksmith Working.jpg." Wikipedia, the Free Encyclopedia. Accessed August 15, 2013. en.wikipedia.org/wiki/File:Bla....
"File:Ductility.svg." Wikipedia, the Free Encyclopedia. Accessed August 15, 2013. en.wikipedia.org/wiki/File:Duc....
"File:Gallium Crystals.jpg." Wikipedia, the Free Encyclopedia. Accessed August 13, 2013. en.wikipedia.org/wiki/File:Gal....
"File:Hot Metalwork.jpg." Wikipedia, the Free Encyclopedia. Accessed August 15, 2013. en.wikipedia.org/wiki/File:Hot....
"File:Kanazawa Gold Factory.jpg." Wikipedia, the Free Encyclopedia. Accessed August 15, 2013. en.wikipedia.org/wiki/File:Kan....
"File:Steel Wire rope.JPG." Wikipedia, the Free Encyclopedia. Accessed August 18, 2013. en.wikipedia.org/wiki/File:Ste....
Muskid. English: Scheme for Metallic Bonding, May 2, 2012. Own work. commons.wikimedia.org/wiki/Fil....
No problem. I'm happy to hear that you enjoy them.
Bozeman Science thank you
This was exactly, exactly what i was missing to clear up a lot of unease I felt understanding electricity and magnetism. I cant believe i don't remember this being explained to me in high school chemistry. Thanks.
thank you so much! you are doing such a great cause helping out students with bad professors! we need more teachers like you!
Thanks so much. Your explanations and graphics are so helpful!
Great video! Super helpful. I love the Khan Academy videos too but sometimes they just ramble way too much. This was straight to the point and so much easier to understand! Thank You!
I'm pretty sure this yt channel is the reason I don't fail science. TY so much :)
I now know where to look for an easy to understand chemistry guide, thank you
Thx that helped me a lot to study for my science test!!!!!!!!!!!!!!!!!!:-)
Clear explanation, thanks for the info.
Thankyou so much for the work that you put in to your videos!
Cheers paul, this video is so helpful for my course
Instructions not clear. My left leg wont stop yelling at me.
Also my toilet forced me to eat its family
He's been mistaken at 4:52 by saying MAGNESIUM instead of MANGANESE, Please put the correction note in the video. Thanks.
it really bothered me when he said that
Well spotted.
Thankyou soo much!! It was really helpful since i have an exam tomorrow :)
This was extremely helpful, thank you very much !!
great work Mr. anderson
I was never taught this in high school so this was helpful!
you seriously helped me get ahead in class
Very clearly put, thanks.
That was definitely helpful with such visualisation.
I can't help but wonder with all those electrons moving around if electrically induced magnetism has an effect on the physical properties of metallic atoms.
I think metallic bonding is the hardest concept to understand between the bonding of the atoms. I still don’t get how the negatively charged electrons from the valence shell ( sea of electrons) attract to the the atom. Is it attracted to the protons in the nucleus?
yes very helpful thanx and make more vids man
Bozeman Science deserves more views! Great high quality videos, cheers.
Excellent explanations!
It was very helpful !
Thank you very much.
This guy is great tho .👌👌
hi
i learn more from these videos than i do from my university prof................
same! my stupid chemistry teacher DOESN'T TEACH AT ALL. he's a good person but he legit doesnt teach
Thanks sir for the explanation.
Extremely helpful thank you soooo much luv your vids may god bless you
+Maha I as a scientist I don't think he would care for your "god[s] blessing[s]"
Great video! Thanks!
Very helpful video!
Though, I would like to point out a mistake.
At 4:54, you said Magnesium instead of Manganese.
Is Manganese an instrument too ?
no
Believe in Steve no Patrick, manganese is not an instrument.
Horse radish is not an instrument either.
Thank you Mr. Anderson - Neo
at 5:15, isnt Cu suppose to be 4s1 3d10? should that make it more stable hence why it has such a low melting point?
What tools do you use to make these great videos?
sorry could someone explain why the more stable ones e.g Manganese has a lower melting point? Shouldn't it require more energy thus more heat/ higher temperature for it to melt
same thing i wanna know
Sharon Sng stable ones don't have as many "free moving electrons" thus less energy and heat in the bond. Making the melting point lower
oh, Im smart AF 'could someone explain why the more stable ones.........
Supper helpful Thank You Very Much !
Thanks, Neo!
Loved it! Thanks!
How does one create this GIF on the electron sea model (1:16) on powerpoint? Any ideas?
I'm still confused at why the melting point goes up and down. :(
Angel Taylor i feel u dog
I'll try and explain as best as I can.
The more electrons that a metal has, the more electrons can flow, which makes the intermolecular bonds stronger as explained before in the video.
But you see, there is a **fixed** amount of electrons that can fit in the d orbitals. The more electrons you add, the less flow you will get. Sort of like a hallway with students in it. The more students in the hallway, the more the students can "flow", but too much, and the flowing will slow down.
Vandium has a high melting point because it hits the sweet spot. It has enough electrons so that it doesn't slow its flow of electrons, but also has enough so that it has electrons to occupy the space.
Hope this helps. I still need to study this, but it seems this is what I understood.
thx very helpful@@MrMineHeads.
This is digressing a bit from metallic bonding, but s & p valence electrons undergo MO hybridisation. Is it a property of d & f valence electrons that they do NOT hybridise, but behave differently, resulting in "electron seas" for neutral metals and the formation of ionic bonds that also react with react with ligands? Can it be said that this always applies?
does group 2b also follow an fundamental principle like group 7b except it skips the s orbital completely, filling the d-orbitals before it fills in the s orbital?
I don't understand the transition metals and why the melting point goes up and down?
Sc melting point is 1500
4s is full
3d has 1 free e-
there is a 3+charge
Ti mp is greater than 1500
4s is full
3d has 2 free unpaired e-
there is a 4+charge
V+5
mp is greater than Ti
4s is full
3d has 3 free unpaired e-
it seems that as u increase the #of free e- the mp also increases?
the more free e- the higher the mp.
You are adding more electrons in the 3d orbital.
BUT if
you add a valence electron from Sc to Ti you are also adding one more proton.
Is it because there are more bonds to break that the mp increases?
but then after
V+5
the melting point drops down when you get to
Cr
The electron does not fill the 4s orbital
before it jumps into the 3d
instead there are 5 free unpaired electrons in the 3d orbital and only 1 in the 4s.
When you get to
Mn 4s is full
the d orbital is filled with 5 free unpaired electrons so it is
MORE stable
the mp drops sharply!!!
I thought that if the 3d orbital is full this would make the 3d orbital more stable and increase the mp???????????
If Mn is more stable will it not take more energy to melt?
Actually, it is the opposite!!!
when you get to
Fe the 4s
is full with 2 e-
the first 3d has 2 paired e-
the rest of the 3d has 4 free e-.
there are 4 free e- total
when u get to Co
the mp drops
4s is full
3d has 4 paired e-
adding e- means that u have only 3 free electrons
this trend decreases the
melting point
is this because there are less free e-
so it is easier to melt?
what is melting?
Ni has only 2 free e-.
smaller mp
the 4s is full with 2 e-
and the 3d has 8 e-
the first , second and third
3d shell have 2 paired e-
there are 2free e- in each of the 3d spaces.
there are 2 free e- total
Cu has only 1 free e-
smaller mp than Ni
the 4s is full with 2 e-
and the 3d has 9 e-
the first , second and third and 4th
3d shell have 2 paired e-
there is 1free e-total
the mp decreases
Zn has No free e-
smaller mp than Cu
the 4s is full with 2 e-
and the 3d has 10 paired e-
the 3d shell is completely full
you are moving towards a non metal
THANK YOUUUU
Does having more unpaired electrons make a metal have higher melting point or what? I'm confused. Please Help!
Thanks :)
Yash Mehan yep .when u have more paired electrons, no: of free electrons reduces.so the energy also reduce
Unpaired electrons means the single spin electrons right??
Sir kindly upload a vid on valence band and conduction band
is metallic bonding happening because the low ionisation energy of metals ?
really helpful thank you
Why do protons give up their valence electrons to acquire them later from the electron sea?
How can free electrons in metal determine its melting point or boiling point? So, the higher the free electrons in a metal, the higher the melting or boiling point?
who moved their cursor at 0:47
you are awesome!
padh padh ke mar jaayega saale
very helpful
This guy is great
What if we made nitinol enfuzed armor? that way if it gets dented we can repair it easily.
this is so cool
wt about the lustrein metals
4:10 look at zinc's melting point
manganese* 4:54... great video
I have a feeling that this is made from keynote, recorded with quicktime player and edited with Imovie
Thanks!
Why by Cr did u take away An electron for 4s
pretty good
At 4:52
Mn - stands for manganese rather than magnesium.
Careful next time!
Remember!
At 4:20
Zinc melting point is 420...
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Elum3nty C0nFuM3d!!1!1!!111!1!!!
Blaze it
420 Zinc it
Ya
Are you related to Hank?? My dad thinks you two look like brothers
no but hank is related to john
Hank? John? Paul? WHO ARE THESE PEOPLE??
Hank is the Crash Course guy right
4:52 it's Manganese, not Magnesium
2012 was a vibe
chemistry is physics's younger brother that thought being annoying was cool and so it got ripped and buff in being annoying till by he time it was an elderly person it died doing a push up.
Important
more the stable an atom is,more its melting point is, im i right?
if so then why does dis happen
I think it's just different for metallic bonding since the more the free electrons, the tighter the bond means the higher the melting point. The less the free electrons that bind the nucleus to each other, the lesser the bond hence lower melting point.
Someone pls correct me if i am wrong 🙏🏻
The sea model is an optical illusion i guess because I'm thinking if its bending or not.
Ms. Neilson
83iii
Very
GUYS GUYS, my test is in SIX DAYS, and I can't figure out one concept:
This seems idiotic to go to a youtube comments section but I've watched videos and am not getting an answer.
This question is: Is Isoelectronic an element with a full Valence shell (Grade 11 AP chemistry).
PLS help
*Manganese not Magnesium . . .
Look it's Austin king
schoool badd amm i rigjt ladyes
Like
LUOA gang?
man, that Khan guy sucks compared to this
I think Sal is a lot better at Math than Chemistry.
They just have different teaching styles !!
💯💯💯💯💯💯
Someone send the answers it’s due Friday :)
nothing was understood especially the last minute
yuh
Yeet hello science class XDXD
If Todd from breaking bad was a teacher
All I have to say is, my professor sinks!!!!!!!!
You teach he just talks.
When in doubt, go to Matt Damon
Good
hello i like pancakes is it metallic bond?
then why is ur name tacos
I was sent here by my teacher.
Same here 😂
@@mimi9074 LoL
He looks too much like me. I dont like it.
🤓
bruh what
coc
kevin gib lösung
O bhai Urdu me bhi smjhaya kr
electron communism