Search found 35 matches
- Sat Dec 08, 2018 12:03 pm
- Forum: Sigma & Pi Bonds
- Topic: Test 3 Q3D
- Replies: 4
- Views: 645
Re: Test 3 Q3D
you should draw the two pi bonds next to each other because pi bonds prevent rotation. they are essentially two electron density regions that are on each side of the intermolecular axis
- Wed Dec 05, 2018 12:07 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Ligands
- Replies: 7
- Views: 572
Re: Ligands
Joey Greco 1F wrote:Ligands must have at least 1 lone pair
why do they have to have at least one lone pair?
- Wed Dec 05, 2018 12:06 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: AX2E2
- Replies: 14
- Views: 4470
Re: AX2E2
the bond angle should be less than 109.5 because of the lone pair repulsion
- Wed Dec 05, 2018 12:05 pm
- Forum: Ionic & Covalent Bonds
- Topic: Bond Lengths
- Replies: 5
- Views: 1237
Re: Bond Lengths
single bonds are the longest and the weakest, triple bonds are the shortest and strongest
- Tue Dec 04, 2018 1:30 pm
- Forum: Ionic & Covalent Bonds
- Topic: Bond Order
- Replies: 4
- Views: 524
Re: Bond Order
no problem!
- Tue Dec 04, 2018 1:29 pm
- Forum: Ionic & Covalent Bonds
- Topic: Bond Order
- Replies: 4
- Views: 524
Re: Bond Order
it also indicates the stability of a bond
- Mon Dec 03, 2018 12:38 pm
- Forum: Naming
- Topic: 17.29 6th edition
- Replies: 2
- Views: 337
Re: 17.29 6th edition
so you would write OH2 not H2O right?
- Sun Dec 02, 2018 6:24 pm
- Forum: Naming
- Topic: 17.33 6th edition
- Replies: 1
- Views: 256
17.33 6th edition
How are you able to tell the maximum number of places on the ligand that can bind simultaneously to a single metal center for CO3 2-? Do you have to draw out the lewis structure?
- Sun Dec 02, 2018 6:06 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: exceptions
- Replies: 6
- Views: 851
Re: exceptions
thank you!!!
- Sun Dec 02, 2018 6:05 pm
- Forum: Hybridization
- Topic: pi vs sigma
- Replies: 12
- Views: 1176
Re: pi vs sigma
okay thank you so much!!!
- Sun Dec 02, 2018 6:04 pm
- Forum: Naming
- Topic: 17.29 6th edition
- Replies: 2
- Views: 337
17.29 6th edition
When do you write (OH2) vs (H2O)? I thought since the O is the element that is bonding, you write OH2, but the solutions show that you write H2O. Can someone please explain?
- Wed Nov 28, 2018 11:56 am
- Forum: Dipole Moments
- Topic: Examples of Intermolecular forces
- Replies: 2
- Views: 449
Re: Examples of Intermolecular forces
Thank you so much!
- Wed Nov 28, 2018 11:54 am
- Forum: Dipole Moments
- Topic: Intermolecular forces
- Replies: 4
- Views: 595
Re: Intermolecular forces
thanks so much for the link!
- Wed Nov 28, 2018 11:30 am
- Forum: Hybridization
- Topic: pi vs sigma
- Replies: 12
- Views: 1176
pi vs sigma
i read on one of the reviews that a pi bond is weaker than a sigma bond but why is that?
- Tue Nov 27, 2018 10:51 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Week 7 Discussion Notes (3A, 3I, 3K)
- Replies: 4
- Views: 1061
Re: Week 7 Discussion Notes (3A, 3I, 3K)
thank you so much!
- Sun Nov 18, 2018 5:59 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Energy of Intermolecular Forces
- Replies: 6
- Views: 887
Re: Energy of Intermolecular Forces
you need energy to form bonds and energy is released when bonds are broken
- Sun Nov 18, 2018 5:24 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: H-Bonding
- Replies: 8
- Views: 2221
Re: H-Bonding
it's only with H and NOF
- Sun Nov 18, 2018 5:19 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Polar v. Non Polar
- Replies: 7
- Views: 846
Re: Polar v. Non Polar
Look at the electronegativity when you're trying to determine if something is polar/nonpolar
- Sun Nov 11, 2018 11:13 pm
- Forum: Ionic & Covalent Bonds
- Topic: Van der Waals vs Dispersion Forces
- Replies: 8
- Views: 1135
Re: Van der Waals vs Dispersion Forces
London dispersion is one of the types of Van der waal forces.
- Sun Nov 11, 2018 11:05 pm
- Forum: Ionic & Covalent Bonds
- Topic: Hydrogen bonding
- Replies: 7
- Views: 1307
Re: Hydrogen bonding
The further apart the two atoms are (longer bond length) the easier they are to separate or break apart
- Sun Nov 11, 2018 11:03 pm
- Forum: Ionic & Covalent Bonds
- Topic: delta positive delta negative
- Replies: 15
- Views: 2240
Re: delta positive delta negative
I think if it accepts electrons is delta negative
- Tue Oct 30, 2018 10:14 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: exceptions
- Replies: 6
- Views: 851
exceptions
Why is it that chromium's electron configuration is [Ar]3d^5 4s^1? I get the [Ar] but why is it 3d^5 instead of 3d^4?
- Mon Oct 29, 2018 11:47 am
- Forum: *Particle in a Box
- Topic: Midterm
- Replies: 17
- Views: 4151
Re: Midterm
Where is last year's midterm on ccle?
- Sun Oct 28, 2018 11:52 pm
- Forum: Ionic & Covalent Bonds
- Topic: Question regarding ionic bonds
- Replies: 9
- Views: 599
Re: Question regarding ionic bonds
Yes ionic bonds are always between a metal and a non metal.
- Sun Oct 28, 2018 11:47 pm
- Forum: Ionic & Covalent Bonds
- Topic: Roman numerals next to element
- Replies: 8
- Views: 6037
Re: Roman numerals next to element
It means the charge of the element!
- Sun Oct 28, 2018 11:43 pm
- Forum: Ionic & Covalent Bonds
- Topic: the Octet rule
- Replies: 21
- Views: 4002
Re: the Octet rule
Are H, He, Li, Be the only four that are exceptions?
- Sun Oct 28, 2018 11:38 pm
- Forum: Ionic & Covalent Bonds
- Topic: ionization energy
- Replies: 3
- Views: 411
ionization energy
Can someone please explain why elements with high ionization energies are not likely to form cations and conduct electricity?
- Sun Oct 28, 2018 11:35 pm
- Forum: Ionic & Covalent Bonds
- Topic: bound atoms
- Replies: 8
- Views: 1184
Re: bound atoms
When atoms are bound together they release energy, so they have less energy than an atom that is not bounded with another atom.
- Sun Oct 28, 2018 11:24 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Degeneracy
- Replies: 3
- Views: 346
Re: Degeneracy
Degenerate means that all of the orbitals of a shell have the same energy. The textbook also says (on p.36 of 6th edition) that the degeneracy orbitals with the same principal quantum number but different orbital angular momentum values is true only of the hydrogen atom and one-electron ions like he...
- Sun Oct 28, 2018 11:15 pm
- Forum: Properties of Light
- Topic: Is light in waves or photons?
- Replies: 10
- Views: 902
Re: Is light in waves or photons?
Light has the both the properties of waves and of particles.
- Sun Oct 28, 2018 11:12 pm
- Forum: Photoelectric Effect
- Topic: HW 1.3
- Replies: 4
- Views: 520
Re: HW 1.3
I think C is the correct answer because frequency decreases causing a change in the wavelength which causes the slope of the wave to also decrease as a result.
- Sun Oct 28, 2018 12:10 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Valence shell and other electrons
- Replies: 4
- Views: 505
Re: Valence shell and other electrons
The effective nuclear charge correlates to the atomic number so the an atom with a greater pull of electrons to the nucleus will have a higher atomic number.
- Fri Oct 05, 2018 2:41 am
- Forum: Limiting Reactant Calculations
- Topic: multiple limiting reactants
- Replies: 9
- Views: 832
Re: multiple limiting reactants
I don't think that there can be two limiting reactants especially if there are only two products.
- Thu Oct 04, 2018 11:29 pm
- Forum: Empirical & Molecular Formulas
- Topic: chemical formulas
- Replies: 4
- Views: 2053
Re: chemical formulas
BrINClHOF
- Thu Oct 04, 2018 10:19 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing reactions tips
- Replies: 29
- Views: 2039
Re: Balancing reactions tips
I usually start by writing all of the coefficients on the side of the reaction that they occur.
Then I continue balancing both sides starting with the element in the least amount.
Then I continue balancing both sides starting with the element in the least amount.