Search found 18 matches

by Kevin Arokiaraj 4E
Mon Dec 03, 2018 1:05 am
Forum: Hybridization
Topic: Double and Triple Bonds
Replies: 17
Views: 155

Re: Double and Triple Bonds

No, only electron density matters.
by Kevin Arokiaraj 4E
Mon Dec 03, 2018 1:02 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Seesaw
Replies: 13
Views: 262

Re: Seesaw

The bond angles are slightly less than 90 and 120 respectively.
by Kevin Arokiaraj 4E
Mon Dec 03, 2018 1:01 am
Forum: Hybridization
Topic: Hybridization
Replies: 11
Views: 119

Re: Hybridization

Trigonal planar would be sp^2.
by Kevin Arokiaraj 4E
Sun Nov 25, 2018 11:27 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: higher polarizability
Replies: 4
Views: 87

Re: higher polarizability

This is because the smaller cation has a higher positive charge, as such the electron pull is much stronger.
by Kevin Arokiaraj 4E
Sun Nov 25, 2018 11:24 pm
Forum: Bond Lengths & Energies
Topic: Bond Length
Replies: 9
Views: 155

Re: Bond Length

You determine the length of a resonance structure by finding the average of the given lengths.
by Kevin Arokiaraj 4E
Sun Nov 25, 2018 11:14 pm
Forum: Octet Exceptions
Topic: The center atom
Replies: 20
Views: 380

Re: The center atom

The central atom is O because it has the least ionization energy.
by Kevin Arokiaraj 4E
Sun Nov 18, 2018 11:18 pm
Forum: Bond Lengths & Energies
Topic: Strength of Bonds
Replies: 9
Views: 175

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.
by Kevin Arokiaraj 4E
Sun Nov 18, 2018 11:17 pm
Forum: Electronegativity
Topic: Is it best to memorize electronegativity?
Replies: 8
Views: 214

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.
by Kevin Arokiaraj 4E
Sun Nov 18, 2018 11:12 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge
Replies: 10
Views: 257

Re: Formal Charge

Since the octet rule is not universal, it's better to have the formal charge be 0.
by Kevin Arokiaraj 4E
Sun Nov 11, 2018 7:29 pm
Forum: Coordinate Covalent Bonds
Topic: bound atoms vs separate atoms
Replies: 5
Views: 162

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.
by Kevin Arokiaraj 4E
Sun Nov 11, 2018 7:27 pm
Forum: Lewis Structures
Topic: Formal Charge
Replies: 14
Views: 222

Re: Formal Charge

I agree, usually the central atom has a charge of 0 in order for it to be more stable.
by Kevin Arokiaraj 4E
Sun Nov 11, 2018 7:26 pm
Forum: Ionic & Covalent Bonds
Topic: Chemical Bonds
Replies: 5
Views: 75

Re: Chemical Bonds

Covalent bonds are longer because they are weaker than ionic bonds (ionic would be shorter).
by Kevin Arokiaraj 4E
Sun Oct 21, 2018 3:08 pm
Forum: Photoelectric Effect
Topic: units
Replies: 12
Views: 187

Re: units

Unless otherwise stated, convert to meters and stick with joules.
by Kevin Arokiaraj 4E
Sun Oct 21, 2018 3:06 pm
Forum: *Shrodinger Equation
Topic: Book Example 1.8:
Replies: 4
Views: 100

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.
by Kevin Arokiaraj 4E
Sun Oct 21, 2018 3:02 pm
Forum: Properties of Light
Topic: Calculating the wavelength of light
Replies: 7
Views: 110

Re: Calculating the wavelength of light

Both are fine to use but 2.998 x 10^8 would give you the more precise answer.
by Kevin Arokiaraj 4E
Sun Oct 07, 2018 6:03 pm
Forum: Ideal Gases
Topic: Reading the textbook [ENDORSED]
Replies: 81
Views: 27079

Re: Reading the textbook [ENDORSED]

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.
by Kevin Arokiaraj 4E
Sun Oct 07, 2018 5:53 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Avogadro's Number
Replies: 9
Views: 168

Re: Avogadro's Number

Yes, use Avogadro's Number (6.022x10^23) to convert between molecules and moles.
by Kevin Arokiaraj 4E
Sun Oct 07, 2018 5:11 pm
Forum: General Science Questions
Topic: Rusty on High School Chem [ENDORSED]
Replies: 113
Views: 36310

Re: Rusty on High School Chem [ENDORSED]

I would definitely recommend quizlet for conceptual questions. For practical questions I would recommend khanacademy and chemwiki.

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