Search found 18 matches
- Mon Dec 03, 2018 1:05 am
- Forum: Hybridization
- Topic: Double and Triple Bonds
- Replies: 17
- Views: 4337
Re: Double and Triple Bonds
No, only electron density matters.
- Mon Dec 03, 2018 1:02 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Seesaw
- Replies: 13
- Views: 2096
Re: Seesaw
The bond angles are slightly less than 90 and 120 respectively.
- Mon Dec 03, 2018 1:01 am
- Forum: Hybridization
- Topic: Hybridization
- Replies: 11
- Views: 1300
Re: Hybridization
Trigonal planar would be sp^2.
- Sun Nov 25, 2018 11:27 pm
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: higher polarizability
- Replies: 4
- Views: 442
Re: higher polarizability
This is because the smaller cation has a higher positive charge, as such the electron pull is much stronger.
- Sun Nov 25, 2018 11:24 pm
- Forum: Bond Lengths & Energies
- Topic: Bond Length
- Replies: 9
- Views: 1130
Re: Bond Length
You determine the length of a resonance structure by finding the average of the given lengths.
- Sun Nov 25, 2018 11:14 pm
- Forum: Octet Exceptions
- Topic: The center atom
- Replies: 20
- Views: 3319
Re: The center atom
The central atom is O because it has the least ionization energy.
- Sun Nov 18, 2018 11:18 pm
- Forum: Bond Lengths & Energies
- Topic: Strength of Bonds
- Replies: 9
- Views: 1083
Re: Strength of Bonds
I don't believe we do but usually the more bonds there are, the shorter each bond is and the stronger they are altogether.
- Sun Nov 18, 2018 11:17 pm
- Forum: Electronegativity
- Topic: Is it best to memorize electronegativity?
- Replies: 8
- Views: 1984
Re: Is it best to memorize electronegativity?
I believe Professor said that we should just have an idea of electronegativity, but not necessarily the exact values. However a basic rule is the farther elements are from each other on the periodic table, the more the electronegative difference is.
- Sun Nov 18, 2018 11:12 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge
- Replies: 10
- Views: 1677
Re: Formal Charge
Since the octet rule is not universal, it's better to have the formal charge be 0.
- Sun Nov 11, 2018 7:29 pm
- Forum: Coordinate Covalent Bonds
- Topic: bound atoms vs separate atoms
- Replies: 5
- Views: 809
Re: bound atoms vs separate atoms
Free moving atoms tend to be more unstable because they have a higher potential energy. As such, bound atoms are more stable because their potential energy is lower.
- Sun Nov 11, 2018 7:27 pm
- Forum: Lewis Structures
- Topic: Formal Charge
- Replies: 14
- Views: 1318
Re: Formal Charge
I agree, usually the central atom has a charge of 0 in order for it to be more stable.
- Sun Nov 11, 2018 7:26 pm
- Forum: Ionic & Covalent Bonds
- Topic: Chemical Bonds
- Replies: 5
- Views: 562
Re: Chemical Bonds
Covalent bonds are longer because they are weaker than ionic bonds (ionic would be shorter).
- Sun Oct 21, 2018 3:08 pm
- Forum: Photoelectric Effect
- Topic: units
- Replies: 12
- Views: 1134
Re: units
Unless otherwise stated, convert to meters and stick with joules.
- Sun Oct 21, 2018 3:06 pm
- Forum: *Shrodinger Equation
- Topic: Book Example 1.8:
- Replies: 4
- Views: 472
Re: Book Example 1.8:
I believe Schrodinger's equation was just gone over for us to have a conceptual understanding, but I do not believe we will have calculations based on it.
- Sun Oct 21, 2018 3:02 pm
- Forum: Properties of Light
- Topic: Calculating the wavelength of light
- Replies: 7
- Views: 1220
Re: Calculating the wavelength of light
Both are fine to use but 2.998 x 10^8 would give you the more precise answer.
- Sun Oct 07, 2018 6:03 pm
- Forum: Ideal Gases
- Topic: Reading the textbook
- Replies: 262
- Views: 152292
Re: Reading the textbook
Personally, I like reading the textbook to view the example problems. However, I feel that I understood the concepts better watching Professor Lavelle's modules and KhanAcademy.
- Sun Oct 07, 2018 5:53 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Avogadro's Number
- Replies: 9
- Views: 1073
Re: Avogadro's Number
Yes, use Avogadro's Number (6.022x10^23) to convert between molecules and moles.
- Sun Oct 07, 2018 5:11 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 347
- Views: 444215
Re: Rusty on High School Chem [ENDORSED]
I would definitely recommend quizlet for conceptual questions. For practical questions I would recommend khanacademy and chemwiki.