Search found 33 matches
- Mon Dec 10, 2018 1:44 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 3
- Replies: 38
- Views: 2733
Re: Test 3
The AXE is the formula for VSEPR, no?? OMG was I reading this all wrong all along???
- Mon Dec 10, 2018 1:40 am
- Forum: Biological Examples
- Topic: Cisplatin
- Replies: 4
- Views: 773
Re: Cisplatin
This is the first time I hear about this. I wish I had known about it sooner. Anyways thanks, everyone.
- Mon Dec 10, 2018 1:39 am
- Forum: Hybridization
- Topic: Hybrid Orbitals
- Replies: 3
- Views: 763
Re: Hybrid Orbitals
I had another question when it comes to hybridization and counting how many bonds we have do lone pairs affect it? In the homework for that section, I remember there was one example where only 3 bonds were created but the answer was sp3 instead of sp2. That's why I'm guessing that something in the l...
- Mon Dec 10, 2018 1:35 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: tetrahedral or square planar?
- Replies: 5
- Views: 919
Re: tetrahedral or square planar?
One thing that we could also use to differentiate between them is that type of metals we are dealing with. For tetrahedral, it consists of all four complexes being non-transitional metals. Square planar in the other hand deals with 2nd and 3rd-row transitional metals.
- Mon Dec 10, 2018 1:26 am
- Forum: Administrative Questions and Class Announcements
- Topic: Discussion Posts
- Replies: 2
- Views: 584
Re: Discussion Posts
We only get 3 points each week and we can get a total of 30 points for the whole quarter. I think that we had until week 10.
- Mon Dec 10, 2018 1:24 am
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Why HClO2 is a stronger acid than HBrO2?
- Replies: 6
- Views: 12915
Re: Why HClO2 is a stronger acid than HBrO2?
I honestly thought this was related to the electronegativity of the element. Thanks for all the help.
- Mon Dec 10, 2018 1:23 am
- Forum: Ionic & Covalent Bonds
- Topic: Ion-Dipole
- Replies: 3
- Views: 898
Re: Ion-Dipole
This are interactions between ions that are charged and a molecule/s that has a dipole.
- Mon Dec 10, 2018 1:20 am
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Acidity
- Replies: 3
- Views: 676
Re: Acidity
I had the same question, but I didn't think this would be on the final since it was the things we cover. :(
- Wed Nov 28, 2018 12:26 am
- Forum: Hybridization
- Topic: Hybrid Orbitals
- Replies: 3
- Views: 763
Re: Hybrid Orbitals
Regarding the hybrid orbitals, I was wondering what determines if it is written as sp3 or sp2. What are we supposed to look at when deciding what number to use, I'm a bit confused.
- Wed Nov 28, 2018 12:24 am
- Forum: Hybridization
- Topic: Hybrid Orbitals
- Replies: 3
- Views: 763
Re: Hybrid Orbitals
I'm also not sure but I was looking at my notes and perhaps it is only the atoms that have both s and p shells full. We need to also consider that the number of hybrids orbitals are simply the regions od electron density.
- Wed Nov 28, 2018 12:14 am
- Forum: Ionic & Covalent Bonds
- Topic: Strength of covalent bonds
- Replies: 2
- Views: 356
Re: Strength of covalent bonds
I think we have to look at this problem in terms of what type of bonds and how it overlaps. sigma is not overlapping as much as pi bonds so it is stronger in that sense. sorry if this is confusing. Try searching an image online, if you see it might make more sense.
- Wed Nov 28, 2018 12:04 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Seesaw Shape Bond Angles
- Replies: 8
- Views: 772
Re: Seesaw Shape Bond Angles
We went over it in discussion, it should be < 120, <90
- Wed Nov 28, 2018 12:01 am
- Forum: Administrative Questions and Class Announcements
- Topic: Week 9 Test
- Replies: 6
- Views: 682
Re: Week 9 Test
I heard that we need to also feel very confident with the Lewis structures for the sections on molecular structure because an error in the structure can make you get everything else wrong.
- Tue Nov 27, 2018 11:58 pm
- Forum: Hybridization
- Topic: sigma and pi bonds
- Replies: 5
- Views: 523
Re: sigma and pi bonds
I think it is the other way around. Pi bonds are weaker than the sigma bonds. Pi bonds are easier to break. I think it has to do with the sigma bonds been closer to the nucleus or something like that.
- Mon Nov 26, 2018 1:23 am
- Forum: Lewis Acids & Bases
- Topic: Determine Lewis Acid
- Replies: 13
- Views: 1679
Re: Determine Lewis Acid
Is this like when you need to complete an octet and you form a bond with another nearby atom? If so, in such case would the one seeking to complete the octet be the one that accepts (Lewis acid) and the one that attaches to it (through a bond) the Lewis base??? OR does this have nothing to do with c...
- Mon Nov 26, 2018 1:16 am
- Forum: Hybridization
- Topic: S character
- Replies: 4
- Views: 518
Re: S character
wait I'm confused, are the s characters like the lone electrons in the central atom which make the bend/push on the attached atoms???
- Mon Nov 26, 2018 1:13 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: pi-bonds
- Replies: 7
- Views: 679
Re: pi-bonds
You could think of it as the second bond that is made. The sigma is the first bond (electrons are taken from the center, C--O ). The pi is formed by taking electrons from around the atom to create bonds. I'm not sure if it makes sense unless you see it, at least that's how they showed me.
- Mon Nov 26, 2018 1:00 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Test 3
- Replies: 38
- Views: 2733
Re: Test 3
for test 3 should we go about to study (the book) chapter 4 on molecular structures and shapes or should we focus on studying what the lectures are about? Since the test is supposed to be similar to the homework problems.
- Mon Nov 26, 2018 12:55 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Like dissolves like
- Replies: 3
- Views: 437
Re: Like dissolves like
I'm sorry this is bit out of topic but what part of the book is this? will test 3 cover this too??
- Mon Nov 19, 2018 1:04 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Electron geometry vs molecular shape
- Replies: 4
- Views: 406
Re: Electron geometry vs molecular shape
What is the difference between the molecular shape and the geometry shapes? I know more or so about the molecular but are these different from the geometry ones?? please help
- Mon Nov 19, 2018 1:01 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Pi bonds and sigma bonds
- Replies: 5
- Views: 501
Re: Pi bonds and sigma bonds
The Sigma bond is when two electron clouds meet and create a bond (think of it as the FIRST bond that's made). And the Pi bond is the second bond made. This bond is made from electrons that are around/surrounding the bonded atoms. I don't know if it makes sense because you kind of need to see it but...
- Sun Nov 11, 2018 11:57 pm
- Forum: Dipole Moments
- Topic: Hydrogen Bonds
- Replies: 20
- Views: 1574
Re: Hydrogen Bonds
What exactly makes hydrogen bonds and covalent bonds strong?
- Sun Nov 11, 2018 11:30 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chemistry Community Posts
- Replies: 3
- Views: 452
Re: Chemistry Community Posts
I also started doing the blog post a bit late because I changed classed and I like you said there's no information on the syllabus. But really all you need to do is respond to others comments and ask questions. They told me that you need to have three post each week and that it has to be done no lat...
- Sun Nov 11, 2018 11:19 pm
- Forum: Properties of Light
- Topic: Test 3
- Replies: 24
- Views: 2256
Re: Test 3
So the last test is in week 9, I hope its on the Lewis Structures.
- Sun Nov 04, 2018 10:59 pm
- Forum: Properties of Electrons
- Topic: Electron Configuration
- Replies: 9
- Views: 1185
Re: Electron Configuration
Also, you should take into account that it is 4d^8 and that is always full so it will do anything to get full, hence reach stability. And yeah also because the 4d orbital needs to get filled before the 5s
- Sun Nov 04, 2018 10:55 pm
- Forum: Administrative Questions and Class Announcements
- Topic: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
- Replies: 121
- Views: 22110
Re: MIDTERM PRACTICE - Garlic Bread Review Session [ENDORSED]
Thank you so much this is really helpful!!
- Sun Nov 04, 2018 10:51 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: electron config. 3d and 4s
- Replies: 5
- Views: 1663
Re: electron config. 3d and 4s
For the 4s orbital n+ l = 4 + 0 = 4. For the 3d n+l = 3 + 2 = 5. So 4s is lower in energy so fills first.After calcium the 3d orbital falls below the 4s in terms of energy. This means the 4s electrons are lost first in chemical reactions and define the atomic radius of the atom. In summary, repulsi...
- Sun Oct 28, 2018 1:21 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Writing electron configurations [ENDORSED]
- Replies: 5
- Views: 321
Re: Writing electron configurations [ENDORSED]
Normally in class, they always start filling the boxes with an up spin and if all the boxes get up spins and you still have extras then the second round is when you would use the down spin. I think you should just stick to this because even the book does it this way.
- Sun Oct 28, 2018 1:17 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: electron config. 3d and 4s
- Replies: 5
- Views: 1663
Re: electron config. 3d and 4s
For the 4s orbital n+ l = 4 + 0 = 4. For the 3d n+l = 3 + 2 = 5. So 4s is lower in energy so fills first.After calcium the 3d orbital falls below the 4s in terms of energy. This means the 4s electrons are lost first in chemical reactions and define the atomic radius of the atom. In summary, repulsi...
- Sun Oct 28, 2018 1:11 am
- Forum: Ionic & Covalent Bonds
- Topic: Valence electrons
- Replies: 8
- Views: 1514
Re: Valence electrons
I know that valence electrons are the ones in the outermost shell but can someone please clarify the number of electrons that go in each shell?
- Sat Oct 20, 2018 10:02 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Uncertainty
- Replies: 3
- Views: 417
Re: Uncertainty
It is like a reciprocal process that since the electron's path will be deflected, if you know the p, then you won't know where it will be. if you know its position, then you won't know its p Thank you so much, your answer really helped. It is much easier to remember and think of this as a reciproca...
- Sat Oct 20, 2018 9:56 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Shielding [ENDORSED]
- Replies: 15
- Views: 2166
Re: Shielding [ENDORSED]
Hello everyone, I'm struggling a bit with this concept. In the hw, it told us to find the ground state of elements (ex: Bi which has 83 electrons) and then the answer was [Xe]4f^(14)5d^(10)6s^(2)6p^(3). When it comes to elements with a high number of electrons is there another way to go about this o...
- Sat Oct 20, 2018 9:41 pm
- Forum: Student Social/Study Group
- Topic: Test #2
- Replies: 6
- Views: 491
Re: Test #2
He said that test 2 is on Quantum world, so is it all of chapter 2?