Search found 29 matches
- Tue Jul 30, 2019 2:31 pm
- Forum: Octet Exceptions
- Topic: breaking the octet
- Replies: 7
- Views: 1369
Re: breaking the octet
Yes I believe this applies to period 3 elements.
- Tue Jul 30, 2019 2:27 pm
- Forum: Dipole Moments
- Topic: Effect of size [ENDORSED]
- Replies: 7
- Views: 1442
Re: Effect of size [ENDORSED]
I think because Van der Waals forces depend on size. he bigger the size, the greater the force due to the electron clouds.
- Tue Jul 30, 2019 12:52 pm
- Forum: Sigma & Pi Bonds
- Topic: Pi Bonds [ENDORSED]
- Replies: 3
- Views: 684
Pi Bonds [ENDORSED]
Why do Pi bonds not allow free rotation? Is this always the case?
- Tue Jul 30, 2019 12:51 pm
- Forum: Lewis Structures
- Topic: Structures [ENDORSED]
- Replies: 1
- Views: 412
Structures [ENDORSED]
Should we be taking the formal charge every time we do a Lewis Structure? Or is that only when specifically asked in the question?
- Tue Jul 30, 2019 12:12 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic vs covalent
- Replies: 8
- Views: 890
Re: Ionic vs covalent
Jennifer Zhou 1A wrote:if the electronegativity difference is greater than 2, it has ionic bond
if the electronegativity difference is less than 1.5, it has covalent bond
How would we go about calculating electronegativity?
- Sun Jul 21, 2019 7:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Polar v. Nonpolar
- Replies: 11
- Views: 2129
Re: Polar v. Nonpolar
Do dipoles influence if an atom has polar or nonpolar bonds?
- Sun Jul 21, 2019 7:01 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 1
- Views: 353
Bond Angles
If there are designated shapes already, does this mean all atoms have fixed angles?
- Sun Jul 21, 2019 6:58 pm
- Forum: Hybridization
- Topic: Electrons
- Replies: 13
- Views: 1280
Electrons
What does it mean when an electron is promoted?
- Sun Jul 21, 2019 6:55 pm
- Forum: Hybridization
- Topic: Pi and Sigma Bonds
- Replies: 17
- Views: 1278
Re: Pi and Sigma Bonds
I believe for Single bond it is a sigma bond .
Double bond is a sigma bond plus on pi bond.
A triple bond is a sigma bond plus two pi bonds .
Double bond is a sigma bond plus on pi bond.
A triple bond is a sigma bond plus two pi bonds .
- Fri Jul 19, 2019 3:20 pm
- Forum: Ionic & Covalent Bonds
- Topic: Radicals
- Replies: 7
- Views: 972
Re: Radicals
Radicals are unpaired electrons.
- Fri Jul 19, 2019 3:13 pm
- Forum: Ionic & Covalent Bonds
- Topic: Notation of electron configurations of ions
- Replies: 5
- Views: 3675
Re: Notation of electron configurations of ions
Since As is in the fourth period it will include 3d10 in its original configuration
- Sun Jul 14, 2019 11:46 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ground State
- Replies: 13
- Views: 1471
Re: Ground State
Actually the configuration for Cu is [Ar}3d^9 4s^2 but because 3d^9 is so close to have a complete shell it steals an electron from 4s^2 taking away one electron and reducing it to [Ar]3d^10 4s^1. Lastly because Cu^+ has the plus sign it means you're removing an electron versus in the hypothetical ...
- Sun Jul 14, 2019 11:45 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ground State
- Replies: 13
- Views: 1471
Re: Ground State
Karolina herrera1F wrote:This would be right only because cu+ is an exception so instead of it being what you first assumed the 1 from the s would travel over to the d which would make it d^10 because of cu+ being an exception.
Oh okay, because when I counted it and went through the process I got 9 not 10 for the D orbital
- Sun Jul 14, 2019 11:42 pm
- Forum: Ionic & Covalent Bonds
- Topic: Homework 3.5
- Replies: 7
- Views: 1083
Re: Homework 3.5
jlinwashington1B wrote:I was wondering the same thing because the s and p orbital is before the d orbital, right??
Thats what i thought as well! And when I checked the answer I was confused.
- Thu Jul 11, 2019 11:44 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 6th edition 19b [ENDORSED]
- Replies: 2
- Views: 624
Re: 6th edition 19b [ENDORSED]
The configuration for Sn would be [Kr]4d^(10)5s^(2)5p^(2). HOWEVER, since it loses four electrons, it becomes Sn+4. The four lost would be those on the outer shells being 5s^(2)5p^(2). Hance the anser is [Kr]4d^(10).
- Thu Jul 11, 2019 11:40 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Number of orbitals given quantum numbers
- Replies: 3
- Views: 578
Re: Number of orbitals given quantum numbers
I believe it is 4 orbitals since s-shell can have 1 and p-shell can have 3.
The d-shell has 5 and f shell has 7. But since we are only going to n=2 it would be 4.
The d-shell has 5 and f shell has 7. But since we are only going to n=2 it would be 4.
- Thu Jul 11, 2019 11:35 am
- Forum: Ionic & Covalent Bonds
- Topic: Ground State
- Replies: 13
- Views: 1471
Ground State
The ground state for Copper ion Cu+ was being asked for. I thought it would be [Ar]3d^(9)4s^(1)
However, the correct answer is [Ar]3d^(10).
Can someone explain the reasoning behind this?
However, the correct answer is [Ar]3d^(10).
Can someone explain the reasoning behind this?
- Thu Jul 11, 2019 11:28 am
- Forum: Ionic & Covalent Bonds
- Topic: Homework 3.5
- Replies: 7
- Views: 1083
Re: Homework 3.5
Maybe try writing out the long ground-state to help you understand why that is correct since it will be included in the [Xe}
- Thu Jul 04, 2019 4:19 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing Equations
- Replies: 6
- Views: 795
Re: Balancing Equations
jlinwashington1B wrote:I remember going over a problem in discussion that required algebra in order tp balance equations... Can someone help me to understand this concept?
I also feel like some problems require more strategies like algebra and would want some clarification as well.
- Thu Jul 04, 2019 4:18 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing Equations
- Replies: 6
- Views: 795
Re: Balancing Equations
I know the ones that you save for last are the ones that are by themselves like "O"(oxygen in most cases). But thank you for sharing your method with me
- Wed Jul 03, 2019 5:30 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing Equations
- Replies: 6
- Views: 795
Balancing Equations
What kind of strategies are best to balance equations that need multiple chnages to the equations.
- Wed Jul 03, 2019 5:20 pm
- Forum: General Science Questions
- Topic: Grading for the Course
- Replies: 4
- Views: 924
Re: Grading for the Course
The TA also said the maximum amount of points you can accumulate is 6 points. So you can not try do all your points at the end of the quarter if that makes sense.
- Wed Jul 03, 2019 5:16 pm
- Forum: Significant Figures
- Topic: Determining sig figs
- Replies: 10
- Views: 2432
Re: Determining sig figs
I believe it would be 3 sig figs.
- Sat Jun 29, 2019 10:47 am
- Forum: Balancing Chemical Reactions
- Topic: Why do we balance chemical equations?
- Replies: 13
- Views: 8488
Re: Why do we balance chemical equations?
To show the conservation of mass. Also my TA said not to assume every chemical equation we get on the exam will be balanced. He said to verify everytime we are presented with an equation to check ourselves that it is balanced.
- Fri Jun 28, 2019 3:18 pm
- Forum: Student Social/Study Group
- Topic: Peer Learning
- Replies: 5
- Views: 714
Re: Peer Learning
Will AAP be holding Peer Learning Sessions as well? I know they have some during the regular school year.
- Fri Jun 28, 2019 3:13 pm
- Forum: Student Social/Study Group
- Topic: Test Studying Strategies
- Replies: 6
- Views: 699
Re: Test Studying Strategies
I am going to go over the homework problems, the examples given in the textbook, the problems posted on the modules, and the worksheets posted by the UAs. I am also going to go over what we should know conceptually from outline 1 (i.e use SI units, Convert units, ect.). The worksheet answer sheets ...
- Fri Jun 28, 2019 3:11 pm
- Forum: Student Social/Study Group
- Topic: Test Studying Strategies
- Replies: 6
- Views: 699
Re: Test Studying Strategies
nicknavejas1B wrote:I think the route im going to go with is the use of hw problems as a guide also. Ive taken this class before but dropped it shortly after the first exam, the questions were very similar to the hw problems.
Thank you, the test is going to be only on the fundamentals chapter correct?
- Wed Jun 26, 2019 10:17 pm
- Forum: Student Social/Study Group
- Topic: Test Studying Strategies
- Replies: 6
- Views: 699
Test Studying Strategies
Does anyone have any techniques or strategies they will be using to study for our upcoming test this next week?
- Wed Jun 26, 2019 10:05 pm
- Forum: Student Social/Study Group
- Topic: Peer Learning
- Replies: 5
- Views: 714
Peer Learning
Hello, I was wondering if anyone knows if there are going to be Peer Learning Sessions for this course. The Professor had mentioned it but I did not see any sessions to register for online.