Search found 20 matches
- Sat Dec 09, 2017 10:31 am
- Forum: Administrative Questions and Class Announcements
- Topic: LaKretz Building [ENDORSED]
- Replies: 2
- Views: 548
Re: LaKretz Building [ENDORSED]
It’s by the bomb shelter. If you walk towards Boelter but keep going it’ll be on your right.
- Thu Dec 07, 2017 1:35 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Isoelectrinic
- Replies: 2
- Views: 483
Isoelectrinic
What is this and what elements/ions ARE isoelectrinic with fluoride ion F^-?
- Wed Nov 29, 2017 10:09 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Delocalized pi bond
- Replies: 1
- Views: 523
Delocalized pi bond
What is a delocalized pi bond and when do they occur?
- Wed Nov 29, 2017 10:08 am
- Forum: Hybridization
- Topic: When?
- Replies: 2
- Views: 535
When?
How do you know when something is hybridized and how do you know which hybrid orbital it is
- Tue Nov 21, 2017 9:55 pm
- Forum: Ideal Gases
- Topic: R in PV=nRT [ENDORSED]
- Replies: 7
- Views: 1777
R in PV=nRT [ENDORSED]
What does R represent?
- Tue Nov 21, 2017 9:53 pm
- Forum: Biological Examples
- Topic: Coordination Compound
- Replies: 2
- Views: 525
Coordination Compound
What is a coordination compound and do they relate in anyway to hybridization or are they completely different?
- Wed Nov 15, 2017 9:11 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: trigonal planar vs. t-shaped
- Replies: 5
- Views: 3564
Re: trigonal planar vs. t-shaped
If it has three reactions of density but one is a lone pair, wouldn’t that be bent?
- Mon Nov 13, 2017 5:55 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: 4.5 Shape
- Replies: 2
- Views: 480
4.5 Shape
How is the shape regional planar if there are only two e- densities? Why is the bond angle 120° and not 180° if there are two lone e- pairs that cancel each other out
- Wed Nov 08, 2017 10:24 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 3d atoms [ENDORSED]
- Replies: 2
- Views: 453
3d atoms [ENDORSED]
At what point, when doing electron configurations for the 3D block, can you put 3d before 4s? Is it when you’ve finished the 3d row and started filling the 4p block?
- Wed Nov 08, 2017 10:18 am
- Forum: Lewis Structures
- Topic: When to use a double bond or triple bond [ENDORSED]
- Replies: 6
- Views: 48541
Re: When to use a double bond or triple bond [ENDORSED]
You should start drawing your Lewis structures with a single bond and then fill the octets. If they are full and you still have electrons that need to be added then add a double bond and try to use the electrons that you need to. If you can’t fill the octets due to a lack of electrons then try using...
- Wed Nov 01, 2017 6:58 pm
- Forum: Octet Exceptions
- Topic: Octet Exceptions
- Replies: 4
- Views: 623
Re: Octet Exceptions
Will the extra electrons always be added to the central tom? What if there are two central atoms?
- Wed Nov 01, 2017 6:54 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Which Quantum Number Represents What?
- Replies: 3
- Views: 788
Which Quantum Number Represents What?
Which quantum numbers represent what? For example, does l represent orientation or velocity?
- Fri Oct 27, 2017 5:17 pm
- Forum: Ionic & Covalent Bonds
- Topic: Cations and Anions [ENDORSED]
- Replies: 12
- Views: 2196
Re: Cations and Anions [ENDORSED]
Cations have lost an electron. Because there is now one more proton than electron, it has a positive charge. You can remember this by the t in cation because it's like a positive sign (+). An anion has gained an electron. Because it now has one more electron than proton, it has a negative charge.
- Fri Oct 27, 2017 5:13 pm
- Forum: Lewis Structures
- Topic: Lengths of Bonds
- Replies: 2
- Views: 976
Lengths of Bonds
If a molecule such as C2H2 has one triple bond between the two Carbons and single bonds with the two Hydrogens. Is the triple bond shorter than the single bonds? I was confused by resonance, but there can only be one possible Lewis structure for C2H2 so there isn't resonance, right?
- Fri Oct 20, 2017 5:47 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: 3d And 4s Orbital Energy Levels [ENDORSED]
- Replies: 3
- Views: 1558
Re: 3d And 4s Orbital Energy Levels [ENDORSED]
I'm confused about this as well. Would the configuration for Ti (Titanium) be Ti: [Ar] 3d2 4s2?
- Fri Oct 20, 2017 5:43 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: N Quantum Number [ENDORSED]
- Replies: 3
- Views: 531
N Quantum Number [ENDORSED]
Does the n quantum number represent the number before the letter that represents the shape? For example, n=2 is 2s or 2p orbital?
- Fri Oct 13, 2017 6:10 pm
- Forum: DeBroglie Equation
- Topic: Deriving the function [ENDORSED]
- Replies: 5
- Views: 864
Re: Deriving the function [ENDORSED]
When is it necessary to use this functions again?
- Fri Oct 13, 2017 6:08 pm
- Forum: Properties of Electrons
- Topic: Wave Properties of Electrons [ENDORSED]
- Replies: 4
- Views: 630
Re: Wave Properties of Electrons [ENDORSED]
X-Rays show diffraction as they pass through a crystal, because electrons do the same you can relate them to a wave such as x-rays.
- Fri Oct 13, 2017 6:06 pm
- Forum: Einstein Equation
- Topic: General Question about Joules [ENDORSED]
- Replies: 7
- Views: 1672
Re: General Question about Joules [ENDORSED]
A joule is defined as: the SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves one meter in the direction of action of the force, equivalent to one 3600th (60^2) of a watt-hour.
- Fri Oct 13, 2017 6:02 pm
- Forum: Limiting Reactant Calculations
- Topic: Reactant vs. Reagent [ENDORSED]
- Replies: 23
- Views: 34909
Re: Reactant vs. Reagent [ENDORSED]
The two words can be interchangeable and you shouldn't get marked off for using one or the other unless specified.