Search found 27 matches

by 104904344
Sun Dec 02, 2018 5:50 pm
Forum: Hybridization
Topic: Lyndon’s practice question #17
Replies: 2
Views: 88

Lyndon’s practice question #17

For the sigma bond shown, why is the abbreviation (C2sp2, C2sp2) and not C2sp2 or sp2-sp2? Why is the hybridization doubled?
by 104904344
Sun Dec 02, 2018 5:48 pm
Forum: Hybridization
Topic: Hybridization of bonds abbreviation
Replies: 2
Views: 69

Hybridization of bonds abbreviation

Is there any difference between the notation of these two bond hybridizations? C(carbon)2sp2 and sp2-sp2?
by 104904344
Sun Dec 02, 2018 5:47 pm
Forum: Hybridization
Topic: Hybridization of pi bonds
Replies: 3
Views: 108

Hybridization of pi bonds

Can someone explain how to find the hybridization of pi bonds? I understand how to find the hybridization of sigma bonds but am confused about finding the hybridization of pi bonds.
by 104904344
Sun Nov 25, 2018 2:12 pm
Forum: Hybridization
Topic: Resonance and hybridization
Replies: 1
Views: 46

Resonance and hybridization

Can someone explain how resonance affects the hybridization of an atom/bond? When do you count/not count lone pairs?
by 104904344
Sun Nov 25, 2018 2:11 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarizability
Replies: 5
Views: 112

Re: Polarizability

Cations with highly polarizing power cause these highly distorted electrons which causes ionic bonds to take on a more covalent character.
by 104904344
Sun Nov 25, 2018 2:00 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: pi and sigma bonds
Replies: 9
Views: 147

Re: pi and sigma bonds

If you know a bond is a pi bond, and there is one pi bond in a double bond and two pi bonds in a triple bond, it may be helpful in determining correct lewis structures as you know the bond cannot be a single bond.
by 104904344
Sun Nov 25, 2018 1:45 pm
Forum: Bond Lengths & Energies
Topic: Bond Length
Replies: 6
Views: 131

Re: Bond Length

And sigma bonds are stronger than pi bonds, right?
by 104904344
Sun Nov 18, 2018 10:44 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Sigma/Pi bonds
Replies: 7
Views: 117

Re: Sigma/Pi bonds

I believe there can be more than one sigma bond in a molecule, but not between two atoms.
by 104904344
Sun Nov 18, 2018 10:38 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Cations vs anions
Replies: 3
Views: 102

Cations vs anions

How do bond angles differ in cations vs anions?
by 104904344
Sun Nov 18, 2018 10:36 pm
Forum: Dipole Moments
Topic: Dipole moments in hybridization
Replies: 2
Views: 67

Dipole moments in hybridization

Does every molecule have some type of dipole moment?
by 104904344
Sun Nov 11, 2018 11:56 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent bond dissociation energy
Replies: 1
Views: 68

Covalent bond dissociation energy

How is covalent bond dissociation energy related to the presence of unpaired elections?
by 104904344
Sun Nov 11, 2018 11:54 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: Examples of intermolecular forces
Replies: 2
Views: 67

Examples of intermolecular forces

What are some examples of dispersion forces, van der Waals, and hydrogen bonding in nature? Will we need to know these types of examples?
by 104904344
Sun Nov 11, 2018 11:52 pm
Forum: Ionic & Covalent Bonds
Topic: Examples
Replies: 2
Views: 87

Examples

What are some real life examples of the dipole moments discussed in class?
by 104904344
Mon Nov 05, 2018 12:00 am
Forum: Sigma & Pi Bonds
Topic: Midterm1
Replies: 10
Views: 283

Re: Midterm1

The midterm only covers Fundamentals, Quantum, Bonding to end of 3.11 (6 Ed.) and to end of 2C (7 Ed.)
by 104904344
Sun Nov 04, 2018 11:59 pm
Forum: Lewis Structures
Topic: Lewis acids and bases
Replies: 1
Views: 52

Re: Lewis acids and bases

Nope!
by 104904344
Sun Nov 04, 2018 11:59 pm
Forum: *Crystal Field Theory
Topic: Crystal Field Theory
Replies: 3
Views: 472

Crystal Field Theory

Could someone explain the crystal field theory's effect on degenerate orbitals?
by 104904344
Sun Oct 28, 2018 9:46 pm
Forum: Octet Exceptions
Topic: Expanded Valence Shells
Replies: 3
Views: 107

Re: Expanded Valence Shells

Expanded valence shells occur when small electronegative atoms like O and Cl are bound by the central atom.
by 104904344
Sun Oct 28, 2018 9:31 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Equation
Replies: 2
Views: 94

Re: Equation

I believe if the question asks about an electron in the range of the nucleus, then you would use diameter as delta x. If the question asks about the electron being in the range of the radius of the nucleus, you would use the radius as delta x.
by 104904344
Mon Oct 22, 2018 7:39 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: 4s vs. 3d
Replies: 1
Views: 44

4s vs. 3d

Why is the 3d state lower than the 4s state after the 4s state is occupied and e- enter 3d state?
by 104904344
Mon Oct 22, 2018 7:37 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Two exceptions
Replies: 2
Views: 38

Two exceptions

Can someone explain why Chromium and Copper are the only two exceptions for filling orbitals shells? Do we need to memorize these two rules/exceptions or will they be given?
by 104904344
Mon Oct 22, 2018 7:34 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Pauli Exclusion Principle
Replies: 3
Views: 63

Pauli Exclusion Principle

Can someone explain why there can't be no more than 2e- per orbital? Why do their spins must be paired?
by 104904344
Tue Oct 16, 2018 7:57 pm
Forum: DeBroglie Equation
Topic: Mass of electrons
Replies: 3
Views: 68

Re: Mass of electrons

I believe they will be given on the tests, midterm, and final!
by 104904344
Tue Oct 16, 2018 7:51 pm
Forum: *Shrodinger Equation
Topic: Schrodinger Equation
Replies: 3
Views: 87

Re: Schrodinger Equation

Will this equation be provided on the test?
by 104904344
Tue Oct 16, 2018 7:50 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg Equation
Replies: 4
Views: 79

Re: Rydberg Equation

Will this equation be given to us on tests?
by 104904344
Sun Oct 07, 2018 10:39 pm
Forum: Limiting Reactant Calculations
Topic: Theoretical vs Actual Yield
Replies: 5
Views: 323

Re: Theoretical vs Actual Yield

Theoretical yield is the maximum yield. Actual yields are less than theoretical yields because of side reactions, impurities, etc.
by 104904344
Sun Oct 07, 2018 10:26 pm
Forum: Balancing Chemical Reactions
Topic: Where to start [ENDORSED]
Replies: 10
Views: 435

Re: Where to start [ENDORSED]

I usually balance the molecule that appears least first. I also usually balance any hydrogen/oxygen molecules last since they are often on both sides of the equation.
by 104904344
Sun Oct 07, 2018 10:23 pm
Forum: Limiting Reactant Calculations
Topic: different ways to determine limiting reactant
Replies: 3
Views: 54

Re: different ways to determine limiting reactant

I was also taught to compare the mole ratio of the reactants with the ratio in the balanced equation in order to find the limiting reactant. I think this is okay for the tests/assignments as long as we calculate the number of moles of product from the limiting reactant in the end instead of just com...

Go to advanced search