Search found 10 matches

by Lauren_Bui_1A
Fri Dec 02, 2016 9:28 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Difference between z>8 and z<8
Replies: 1
Views: 286

Re: Difference between z>8 and z<8

When z>8, the sigma pz bond is lower energy than the pi bond. When z<8, the sigma bond pz is higher energy than the pi bonds.

Hope that helps!
by Lauren_Bui_1A
Sun Nov 27, 2016 7:17 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Oxoacids
Replies: 2
Views: 411

Re: Oxoacids

So, the greater the electronegativity of the halogen, the stronger is the oxoacid. Electrons are withdrawn slightly from the O-H bond as the electronegativity of the halogen increases. As these bonding electrons move toward the central atom, the O-H bond becomes more polar, and so the molecule becom...
by Lauren_Bui_1A
Thu Nov 17, 2016 12:48 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: polydentate ligands [ENDORSED]
Replies: 2
Views: 679

Re: polydentate ligands [ENDORSED]

Polydentate ligands can occupy more than one binding site simultaneously. For example, each end of the bidentate ethylenediamine molecule, NH2CH2CH2NH2 has a nitrogen atom with a lone pair of electrons.

Hope that helps!
by Lauren_Bui_1A
Sat Nov 12, 2016 9:54 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Which model to use?
Replies: 1
Views: 344

Re: Which model to use?

For z≥8, pz is the bond axis and sigma bonds lower energy than pi bonds.
For z<8, sigma pz orbital is above the pi x and pi y orbitals.

Hope that helps!
by Lauren_Bui_1A
Sun Nov 06, 2016 11:14 pm
Forum: Hybridization
Topic: Hybridizaton Textbook equation
Replies: 2
Views: 384

Re: Hybridizaton Textbook equation

Also for the signs, in h1 the s and p orbitals all have their usual signs and their amplitudes add together to be all positive. But in h2, px and py are negative, so the resulting interference pattern is different.
by Lauren_Bui_1A
Sun Oct 30, 2016 2:21 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond angles of TeCli4
Replies: 1
Views: 334

Re: Bond angles of TeCli4

So in TeCl4 the lone pair pushes the bonded pairs away which causes the angles to be slightly less than 90 and 120 degrees. The 90 degrees is the axial bond angle in the vertical plane and the 120 degree is the equatorial bond in the horizontal plane.

Hope that helps!
by Lauren_Bui_1A
Thu Oct 20, 2016 11:38 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Question 2.19 part b and c [ENDORSED]
Replies: 6
Views: 762

Re: Question 2.19 part b and c [ENDORSED]

When m sub l is -2, -1, 0, 1, 2, l=2 which are the d-orbitals.
m sub l for when l=1 are the p-orbitals.
by Lauren_Bui_1A
Sun Oct 16, 2016 8:42 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Chapter 2 HW: #37
Replies: 1
Views: 255

Chapter 2 HW: #37

This question is true/false and explain.
c) Electrons having l=2 are better at shielding than electrons having l=1.

I think this statement is false but I'm not sure why. Can someone explain?

by Lauren_Bui_1A
Thu Oct 06, 2016 11:26 pm
Forum: Properties of Light
Topic: Atomic Spectra- Question 1.15 [ENDORSED]
Replies: 3
Views: 594

Re: Atomic Spectra- Question 1.15 [ENDORSED]

In the question it states "In the ultraviolet spectrum of atomic hydrogen..."
The ultraviolet spectrum is the Lyman series, so n final=1.
by Lauren_Bui_1A
Fri Sep 30, 2016 6:01 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Negative Sign for Energy
Replies: 2
Views: 343

Re: Negative Sign for Energy

In the example in the course reader, we were finding the change in energy for the electron. The final state is lower than the initial state so photons were emitted and we should expect a decrease in energy. Hope that helps!

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