Search found 31 matches
- Mon Dec 03, 2018 1:52 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis vs. Bronsted
- Replies: 5
- Views: 3992
Re: Lewis vs. Bronsted
This is kind of funny but to remember acids bronsted vs. lewis I use, my Bro(nsted) is a Pro(ton) with Do(nor), and then I just remember that the Lewis acid involves electrons and accepts them so A(cid) (A)ccepts.
- Mon Dec 03, 2018 1:47 pm
- Forum: Naming
- Topic: Order of Ligand Naming
- Replies: 6
- Views: 540
Re: Order of Ligand Naming
lindsey_ammann_3E wrote:Saman Andalib 1A wrote:You name the ligands in a coordination compound in alphabetical order.
To follow up, is it alphabetical order by prefix or by the names of the ligands?
It is alphabetical order by the name of the element, so monochloro would come before dioxide. Hope that helps.
- Mon Dec 03, 2018 1:44 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: what is a ligand?
- Replies: 8
- Views: 834
Re: what is a ligand?
Ligands are just molecules bonded to the central atom that help make up regions of electron density. Ligands always follow the octet rule, except hydrogen which can have 2 electrons in its valence shell. Hope that helps.
- Wed Nov 28, 2018 10:41 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Polarizing Power/Polarizability
- Replies: 2
- Views: 341
Re: Polarizing Power/Polarizability
Covalent character just means that instead of one element fully stealing electrons from the other their electron clouds share, not to the extent that covalent bonds share electrons but there is some sharing rather than solely taking electrons. The larger the atomic radii of an element the more easil...
- Wed Nov 28, 2018 10:36 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent and Angular
- Replies: 5
- Views: 467
Re: Bent and Angular
The terms "bent" and "angular" are interchangeable and mean the exact same thing so you will be given full credit no matter which term you use as long as that is the appropriate shape.
- Wed Nov 28, 2018 10:34 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 5
- Views: 560
Re: Bond Angles
There is no chart, but it helped me to make my own chart with bond angles, shapes, electron domains, hybridization and polarity and memorize that for the test. Good luck!
- Sat Nov 24, 2018 9:53 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: double and triple bonds
- Replies: 10
- Views: 1051
double and triple bonds
when there are a double or triple bond hows does that affect the vsepr structure?
- Sat Nov 24, 2018 9:51 am
- Forum: Hybridization
- Topic: hybridization problems
- Replies: 4
- Views: 376
hybridization problems
I am confused how to do hybridization within problems does anybody have a good way of explaining how to solve these problems?
- Sat Nov 24, 2018 9:47 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: vsepr shape
- Replies: 6
- Views: 658
vsepr shape
Does anyone have a trick to figuring out the vsepr shape from the lewis structure?
- Fri Nov 16, 2018 4:20 pm
- Forum: Ionic & Covalent Bonds
- Topic: Fluorine bonds
- Replies: 3
- Views: 948
Re: Fluorine bonds
F only has 7 valence electrons so for it to be able to stabilize and form an octet which is what the molecule ultimately needs to achieve stability it needs to covalently bond with H, sharing the pair formed between them which is why it cannot form a double or triple bond, the rationale for Fluorine...
- Fri Nov 16, 2018 2:58 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: bonds
- Replies: 2
- Views: 268
bonds
can someone explain to me the difference between sigma and pi bonds I was a little confused on their meaning in lecture.
- Fri Nov 16, 2018 2:47 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: tetrahedral vs trigonal planar
- Replies: 9
- Views: 1036
tetrahedral vs trigonal planar
I am having trouble distinguishing between tetrahedral and trigonal planar, how can I know which the Lewis structure is?
- Fri Nov 09, 2018 1:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Trigonal Planar
- Replies: 8
- Views: 901
Re: Trigonal Planar
The actual structure would be 3D since molecules exist in a 3-dimensional world. All Lewis Structures are 2D forms of molecules which is why they can have multiple different structures but the VSPR models display how molecules look and function according to the laws of the physical world.
- Fri Nov 09, 2018 1:00 pm
- Forum: Bond Lengths & Energies
- Topic: boiling points
- Replies: 4
- Views: 397
boiling points
How can you determine which compounds have higher boiling points vs. which have lower ones?
- Fri Nov 09, 2018 12:59 pm
- Forum: Dipole Moments
- Topic: Induced Dipole Meaning
- Replies: 2
- Views: 346
Induced Dipole Meaning
I am confused about the meaning of an induced dipole, would someone mind explaining what the two terms mean in relation to each other?
- Wed Oct 31, 2018 10:49 am
- Forum: Octet Exceptions
- Topic: Odd Lewis Structures
- Replies: 3
- Views: 384
Odd Lewis Structures
When doing an example like BF3 how will we be able to know that all of the F elements have an octet but B only has 6 electrons? Would this be something we might see on a test? I am just confused on how we can know which element to put the octets on when it comes to a compound like BF3 that has 24 el...
- Wed Oct 31, 2018 10:43 am
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge and correct numbers
- Replies: 2
- Views: 336
Formal Charge and correct numbers
How do we know if an element can be negative or positive if it is impossible to make them both charged to 0?
- Wed Oct 31, 2018 10:38 am
- Forum: Lewis Structures
- Topic: Valence Electrons
- Replies: 3
- Views: 375
Valence Electrons
Hi, I am confused on how to figure out how many valence electrons each element has. How can I determine this?
- Fri Oct 26, 2018 1:04 pm
- Forum: Lewis Structures
- Topic: octets
- Replies: 13
- Views: 1004
octets
How can you distinguish if an element has a full octet? Does each orbital have to have a full octet before moving to the next orbital?
- Fri Oct 26, 2018 1:02 pm
- Forum: Lewis Structures
- Topic: Outer electrons
- Replies: 2
- Views: 312
Outer electrons
How do we know which electrons are the outermost electrons? And how do we count them?
- Fri Oct 26, 2018 1:00 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 3d and 4s
- Replies: 2
- Views: 342
3d and 4s
Hi, I was wondering why the 3d and 4s orbitals are on the same row of the periodic table. That whole thing is confusing to me does anyone know why that happens?
- Wed Oct 17, 2018 9:01 am
- Forum: Quantum Numbers and The H-Atom
- Topic: Equation sheet
- Replies: 4
- Views: 487
Equation sheet
Does anyone know which equations are going to be on the equation sheet for the test this section?
- Wed Oct 17, 2018 8:56 am
- Forum: Quantum Numbers and The H-Atom
- Topic: Lyman, Balmer, Pascal
- Replies: 10
- Views: 1373
Lyman, Balmer, Pascal
I don't understand what the Lyman, Balmer and Pascal principles mean in context, can someone explain.
- Wed Oct 17, 2018 8:48 am
- Forum: Photoelectric Effect
- Topic: SI and equation units
- Replies: 2
- Views: 284
SI and equation units
Does anyone have a way to remember SI units and which units go with which variable in equations to make it easier to do stoichiometry? Please let me know.
- Fri Oct 12, 2018 2:24 pm
- Forum: Photoelectric Effect
- Topic: Confusion on calculating the dropping of an energy level
- Replies: 1
- Views: 263
Confusion on calculating the dropping of an energy level
Hi I am confused on how to calculate the energy gained or lost when an electron moves up an energy level/dropped. Can someone please explain the steps to calculating the change in energy.
- Fri Oct 12, 2018 2:20 pm
- Forum: Properties of Electrons
- Topic: Wavelength Properties
- Replies: 4
- Views: 264
Wavelength Properties
When solving if a certain object has wavelike properties I'm confused why numbers with less than 10^-18 do not show wavelength properties. Can someone explain what this threshold means and what the boundaries of a wavelike property are.
- Fri Oct 12, 2018 2:15 pm
- Forum: Properties of Light
- Topic: Quantum World Topics
- Replies: 3
- Views: 134
Quantum World Topics
Hi all, I was wondering if anyone knew of any additional online resources to learn the concept of this section since I have been a bit confused on it. Let me know if you know of any websites of youtube videos. Thank you.
- Thu Oct 04, 2018 2:47 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: Deteremining V1 vs. V2
- Replies: 1
- Views: 615
Deteremining V1 vs. V2
Hi, I have trouble doing dilution problems and figuring out which volume is V1 vs. V2. Also I have issues on where to start with a lot of questions, i read them then I get confused on what I'm supposed to be doing, any tips on how to combat that?
- Sun Sep 30, 2018 11:32 am
- Forum: Administrative Questions and Class Announcements
- Topic: Solutions Manual
- Replies: 9
- Views: 1728
Re: Solutions Manual
I am also confused as to whether or not to get a solutions manual and does it have step by step help or just one answer? Do they still have them at the student store or can we find them online? I definitely want to check my answers and I just rented the hardcover textbook but wasn't told we needed a...
- Sun Sep 30, 2018 10:19 am
- Forum: Balancing Chemical Reactions
- Topic: Short cuts/methods for balancing equations
- Replies: 15
- Views: 1570
Short cuts/methods for balancing equations
Hi all, I have never been great at being able to balance equations just by looking at them, does anyone have any tips on shortcuts/methods they use to help them balance equations especially when they get complicated? Also if you know of any youtube chemistry help that would be appreciated, I am a ve...
- Sun Sep 30, 2018 10:13 am
- Forum: Empirical & Molecular Formulas
- Topic: Mutiplying by a number
- Replies: 3
- Views: 235
Mutiplying by a number
Hi, after dividing by the smallest value how would you know what number to multiply by if more than one of the numbers isn't a whole integer. For example, in the vitamin C example you end up with 1.00C:1.33H:1.00O then multiply them by three to get whole integers but what would you do if you had for...