Search found 8 matches
- Sun Jul 16, 2017 10:37 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configurations
- Replies: 4
- Views: 773
Re: Electron Configurations
Is it possible to solve for the electron configuration of an excited atom if so how? When given an excited atom, the easiest way for me is to solve for its ground state. Then it's just a matter of adding of subtracting the charge. If it has a positive charge, we know it lost some electrons and woul...
- Sun Jul 16, 2017 10:14 pm
- Forum: Lewis Structures
- Topic: Seesaw Structure question
- Replies: 3
- Views: 1476
Re: Seesaw Structure question
In the seesaw, you have 4 atoms and an electron pair. The pair does repel a good amount, but the repulsion of the other atoms cannot be neglected. To put the electrons on top and have the other 4 as a pyramid base would have too much repulsion from the 4 atoms. the seesaw shape puts enough space bet...
- Sun Jul 16, 2017 9:58 pm
- Forum: Lewis Structures
- Topic: Octet Rule [ENDORSED]
- Replies: 9
- Views: 1553
Re: Octet Rule [ENDORSED]
Do we have these exceptions to the octet rule only when we are more concerned with formal charge? These exceptions have more to do with the fact that the d orbital is available, so it is used. Recall that the transition metals have a configuration one less than the row they're in, meaning that the ...
- Sun Jul 16, 2017 9:46 pm
- Forum: Lewis Structures
- Topic: P, S, Cl can have more than 8 electrons?
- Replies: 2
- Views: 853
Re: P, S, Cl can have more than 8 electrons?
Once you get to the third row, you have the 3d orbital to consider. Remember that the transition metals are one less than the row they're in, meaning the ones in the n=4 row have the 3d configuration. This means that the elements in the third row can use the d orbital to exceed the octet rule. It is...
- Sun Jul 02, 2017 8:30 pm
- Forum: Photoelectric Effect
- Topic: Wave properties of electrons
- Replies: 2
- Views: 481
Re: Wave properties of electrons
The course reader has a good illustration of constructive and destructive interference. Imagine two waves on top of each other. When the peaks and troughs line up, it makes the amplitude bigger (constructive). When the peaks of one wave line up with the troughs of the other, I imagine that they coll...
- Sun Jul 02, 2017 8:13 pm
- Forum: Properties of Light
- Topic: Amplitude versus wavelength
- Replies: 4
- Views: 717
Re: Amplitude versus wavelength
Wavelength and frequency are inversely related. The longer the wavelength, the lower the frequency. Amplitude is not necessarily related to either wavelength or frequency. Instead, wavelength deals with intensity. So you cannot say anything about amplitude based on whether the wavelength or frequenc...
- Sun Jul 02, 2017 7:49 pm
- Forum: Empirical & Molecular Formulas
- Topic: Identifying Empirical and Molecular Formulas [ENDORSED]
- Replies: 13
- Views: 9055
Re: Identifying Empirical and Molecular Formulas [ENDORSED]
The empirical formula is the formula that shows the ratio of atoms. The molecular formula shows the actual number of atoms. An example would be CH2O. This is the empirical formula for glucose, which is C6H12O6. You can see that for every one atom of C, there are two of H and one of O. This is given ...
- Sun Jul 02, 2017 7:36 pm
- Forum: Properties of Light
- Topic: Amplitude of the wave [ENDORSED]
- Replies: 7
- Views: 1443
Re: Amplitude of the wave [ENDORSED]
I believe that amplitude is related to the intensity of the light. The energy is changed by changing the frequency. This is why the photoelectric experiment proved light does not have wave properties. They expected more intense waves (bigger amplitude) to be able to remove electrons. But when this f...