Search found 35 matches

by Leslie Contreras 1D
Sun Jun 10, 2018 10:59 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Hybridization
Replies: 7
Views: 261

Re: Hybridization

This was very helpful thank you
by Leslie Contreras 1D
Sun Jun 10, 2018 10:57 pm
Forum: Naming
Topic: Naming
Replies: 5
Views: 295

Naming

what are the bond angles for pentagona bipyramidal
by Leslie Contreras 1D
Sun Jun 10, 2018 10:47 pm
Forum: Hybridization
Topic: Chapter 4 [ENDORSED]
Replies: 4
Views: 269

Chapter 4 [ENDORSED]

what makes a vsper shape polar or non polar?
by Leslie Contreras 1D
Sun Jun 03, 2018 11:52 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Hybridization
Replies: 7
Views: 261

Hybridization

Are we suppost to memorize the hybridization of each shape or how do I figure it out?
by Leslie Contreras 1D
Sun Jun 03, 2018 11:50 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: pi and sigma bonds
Replies: 3
Views: 154

pi and sigma bonds

I am not too sure their significance in hybridization orbitals
by Leslie Contreras 1D
Sun Jun 03, 2018 11:49 pm
Forum: Naming
Topic: Coordination compound
Replies: 6
Views: 298

Re: Coordination compound

is the product of a Lewis acid-base reaction in which neutral molecules or anions (called ligands) bond to a central metal atom (or ion)
by Leslie Contreras 1D
Sun May 27, 2018 10:44 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond angle
Replies: 9
Views: 244

Bond angle

how do lone pairs affect bond angles?
by Leslie Contreras 1D
Wed May 23, 2018 2:41 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angle
Replies: 10
Views: 267

Re: Bond Angle

You just said in class "These are found experimentally. You will not have to memorize"
by Leslie Contreras 1D
Wed May 23, 2018 2:36 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angle
Replies: 10
Views: 267

Bond Angle

What determines the angle of the bonds in a molecule?
by Leslie Contreras 1D
Wed May 23, 2018 11:00 am
Forum: Octet Exceptions
Topic: Exoanding
Replies: 1
Views: 160

Exoanding

I was under the impression octet expansions fall under the d orbitals but during an HW problem, Cl was able to expand its octet. I guess my question is what constitutes the octet expansion?
by Leslie Contreras 1D
Wed May 23, 2018 10:57 am
Forum: Resonance Structures
Topic: Ionic character
Replies: 3
Views: 295

Ionic character

I get these scrambled is it that they have a small radius that they have more ionic character or less?
by Leslie Contreras 1D
Wed May 23, 2018 7:59 am
Forum: Octet Exceptions
Topic: Lattice energy
Replies: 1
Views: 161

Lattice energy

There is an example in the book about identifying the greater lattice energy?
it said the ionic radius of NaCl is less but what does that have to do with lattice energy?
by Leslie Contreras 1D
Sun May 13, 2018 10:28 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Bonds
Replies: 4
Views: 305

Bonds

Why are multiple bonds shorter than the single bonds?
by Leslie Contreras 1D
Sun May 13, 2018 10:23 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Bond Dissociation
Replies: 2
Views: 142

Bond Dissociation

Why does the bond weaken in the change from a triple bond in N2 to single bond in F2?
by Leslie Contreras 1D
Sun May 13, 2018 10:18 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Polarization
Replies: 2
Views: 195

Polarization

Why does the electron cloud of the anion get distorted?
by Leslie Contreras 1D
Sun May 06, 2018 10:20 pm
Forum: Ionic & Covalent Bonds
Topic: Vacuum
Replies: 1
Views: 98

Vacuum

I saw the back cover for the constant but I'm still not sure why there is an importance to it
they describe epsilon zero
z1 and z2 and e
but not permittivity
by Leslie Contreras 1D
Sun May 06, 2018 10:15 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent vs. Ionic
Replies: 3
Views: 146

Re: Covalent vs. Ionic

Thank you that really helped
both of you
by Leslie Contreras 1D
Sun May 06, 2018 10:14 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bond formation
Replies: 5
Views: 187

Re: Ionic Bond formation

Susu Le 1F wrote:That energy is required to overcome the effective nuclear charge that is acting on the electron.


SORRY I still do not understand
by Leslie Contreras 1D
Sun May 06, 2018 9:31 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bond formation
Replies: 5
Views: 187

Ionic Bond formation

when you add the electron to Calcium the energy required is 494
where is that number found?
what constitutes as required a cation needing to push an electron or is that released because of the electron leaves?
by Leslie Contreras 1D
Sun May 06, 2018 9:06 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent vs. Ionic
Replies: 3
Views: 146

Covalent vs. Ionic

In the book, ionic bonds are the transfer of electrons then it says covalent bonds share electrons.
Why do they have such a big difference don't they share either way?
by Leslie Contreras 1D
Sat Apr 28, 2018 10:55 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Hund's Rule [ENDORSED]
Replies: 6
Views: 247

Hund's Rule [ENDORSED]

I keep re reading "due to electron repulsion electrons in the same subshell occupy different orbitals with parallel spins (lowest energy)"
But I do not entirely know what it means
by Leslie Contreras 1D
Sat Apr 28, 2018 9:59 pm
Forum: Quantum Numbers and The H-Atom
Topic: H-atom
Replies: 1
Views: 83

H-atom

why can hydrogen spin either -1/2 or +1/2
by Leslie Contreras 1D
Sat Apr 28, 2018 9:41 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: The N in l,n,m [ENDORSED]
Replies: 2
Views: 96

The N in l,n,m [ENDORSED]

in the book, n is the quantum number, related to size and energy
How does it relate to orbitals?
by Leslie Contreras 1D
Mon Apr 23, 2018 1:04 am
Forum: Administrative Questions and Class Announcements
Topic: Homework
Replies: 2
Views: 174

Re: Homework

so we stick to ch.1 and chapter2
by Leslie Contreras 1D
Sun Apr 22, 2018 8:47 pm
Forum: Administrative Questions and Class Announcements
Topic: Homework
Replies: 2
Views: 174

Homework

For this weeks homework do we do chapter 3 set of problems
by Leslie Contreras 1D
Sun Apr 22, 2018 8:43 pm
Forum: *Shrodinger Equation
Topic: Schrodinger Equation
Replies: 2
Views: 177

Schrodinger Equation

Is Atomic number Z a constant used to be able to see other elements besides Hydrogen atoms
by Leslie Contreras 1D
Sun Apr 22, 2018 8:35 pm
Forum: *Shrodinger Equation
Topic: Schrodinger Equation
Replies: 1
Views: 150

Schrodinger Equation

Which one is the SE equation V(r)= or En=
The book gives those but I am not sure how they are related?
by Leslie Contreras 1D
Sun Apr 22, 2018 8:12 pm
Forum: *Shrodinger Equation
Topic: ch.2.1
Replies: 5
Views: 252

ch.2.1

I don't get the very first sentence, " An electron in an atom is like a particle in a box, in the sense that it is confined within the atom by the pull of the nucleus "
How are e- confined?
by Leslie Contreras 1D
Sun Apr 15, 2018 9:42 pm
Forum: Properties of Light
Topic: The Electromagnetic spectrum
Replies: 5
Views: 105

The Electromagnetic spectrum

Do we have to memorize the spectrum if not how do we calculate its energy in order?
by Leslie Contreras 1D
Sun Apr 15, 2018 9:30 pm
Forum: *Particle in a Box
Topic: example 1.8
Replies: 1
Views: 282

example 1.8

in this example, I am unclear what exactly the formula is to be used in these situations? What exactly are we trying to find?
by Leslie Contreras 1D
Sun Apr 15, 2018 9:02 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Using the uncertainty principle [ENDORSED]
Replies: 2
Views: 160

Using the uncertainty principle [ENDORSED]

In using the uncertainty principle in the textbook why did they replace h as 1.05457x10^-34
in example 1.7
by Leslie Contreras 1D
Sun Apr 15, 2018 8:11 pm
Forum: *Black Body Radiation
Topic: Example 1.3 in the textbook
Replies: 3
Views: 298

Example 1.3 in the textbook

We were only shown Weins law but will we use Stefan-Boltzmann
law Total intensity=constant xT^4
When will this concept come up? Can someone explain to me why T^4
by Leslie Contreras 1D
Sun Apr 15, 2018 8:02 pm
Forum: Photoelectric Effect
Topic: Example 1.5 in the textbook [ENDORSED]
Replies: 2
Views: 119

Example 1.5 in the textbook [ENDORSED]

Why is it that after finding the frequency we divide it by plancks constant to then put it in the speed of light equation (wavelength= speed of light/frequency.
by Leslie Contreras 1D
Wed Apr 11, 2018 2:30 pm
Forum: Empirical & Molecular Formulas
Topic: Empirical Formula
Replies: 2
Views: 155

Empirical Formula

The Molar mass is 84g.mol and its empirical Formula is CH2. What is its Molecular Formula?
I'm not sure how to start but I understand the process?

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