Search found 18 matches

by Gurpreet Khamba 1J
Mon Dec 04, 2017 10:27 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Pi and sigma bonds [ENDORSED]
Replies: 7
Views: 428

Re: Pi and sigma bonds [ENDORSED]

Pi and Sigma bonds don't change with resonance structures. As you create the lewis structures, you understand that the representations do not accurately represent the molecule.
by Gurpreet Khamba 1J
Mon Dec 04, 2017 10:22 am
Forum: Polyprotic Acids & Bases
Topic: Polyprotic Acid Ka [ENDORSED]
Replies: 3
Views: 637

Re: Polyprotic Acid Ka [ENDORSED]

Yes. Acids have as many Ka values as the H that it has.
by Gurpreet Khamba 1J
Mon Dec 04, 2017 10:14 am
Forum: Significant Figures
Topic: Significant Figures [ENDORSED]
Replies: 3
Views: 340

Re: Significant Figures [ENDORSED]

To get a value lower than the actual makes me believe that you rounded values as you continued solving. Significant figures comes into play at the end, once the answer is determined. I do not believe you will get full credit because of that but perhaps you will only lose one point.
by Gurpreet Khamba 1J
Mon Dec 04, 2017 10:11 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: H20 Dentate [ENDORSED]
Replies: 2
Views: 200

Re: H20 Dentate [ENDORSED]

Since it is the oxygen that will bond with the metal central atom.
by Gurpreet Khamba 1J
Sun Nov 19, 2017 7:43 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Double bonds vs. single bonds
Replies: 4
Views: 282

Re: Double bonds vs. single bonds

The VESPR model of CO2 is linear. Although it has a total of 4 bonds, the bonds are simply summarized as existing between the Carbon and O's. To answer your question, the existence of double bonds is disregarded in VESPR models since it would get too hectic to include their interactions in the model.
by Gurpreet Khamba 1J
Sun Nov 19, 2017 7:19 pm
Forum: Hybridization
Topic: Pi Bonds
Replies: 2
Views: 215

Re: Pi Bonds

It comes down to the way the bond forms. If we look at the double bond in carbon atoms, there is a pi bond forming above and below the plane of the carbon atoms. The bond, which is enabling the sharing of an electron, breaking would imply the p-orbitals not overlapping and allowing the sharing. Sinc...
by Gurpreet Khamba 1J
Sat Nov 11, 2017 10:56 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Radicals
Replies: 2
Views: 221

Re: Radicals

In molecular shapes, the radicals are less repulsive than paired e-. As such, if a radical replaced a pair, the other atoms would get closer to the unpaired e-, and the angle, wider.
by Gurpreet Khamba 1J
Sat Nov 11, 2017 10:46 pm
Forum: Resonance Structures
Topic: Resonance Structures and Molecular Shapes
Replies: 1
Views: 212

Re: Resonance Structures and Molecular Shapes

When you find the shape of a molecule, sometimes you will end up with a shape that has several atoms connecting to the center. If the center only needs 8 e- and you have plenty of electrons then things are fine. Resonance structures come into play when these connecting atoms can be changed around. I...
by Gurpreet Khamba 1J
Sun Nov 05, 2017 12:06 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Shapes
Replies: 2
Views: 189

Re: Shapes

It is bent and not linear when unpaired e- are present. As such, when writing the lewis structure, when the element has lone pair- e- and is connected to two other elements, you can tell it will be bent. In other words, when the central element is bonded to two other elements and has at least one lo...
by Gurpreet Khamba 1J
Sun Nov 05, 2017 12:01 am
Forum: Lewis Structures
Topic: Cl as an Expanded Octet
Replies: 3
Views: 1674

Re: Cl as an Expanded Octet

Since Cl is in the 3rd period, and at the end, is more likely to gain e-, it is possible for it to take electrons if needed. An example of this is ClF3.
There are 28 e- and F will not take more than 8 leaving Cl with an extra 4 e-.
by Gurpreet Khamba 1J
Sun Oct 29, 2017 7:42 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Confusion regarded e- configuration
Replies: 3
Views: 250

Re: Confusion regarded e- configuration

its done through energy level so it should be 1s 2s 2p 3s 3p 3d 4s 4p, etc. the d comes after the p.
Of course, you can substitute a noble gas in the notation to make it shorter, e.g. Ni = [Ar] 3d^8 4s^2
by Gurpreet Khamba 1J
Sun Oct 29, 2017 7:38 pm
Forum: Trends in The Periodic Table
Topic: electron shielding 2.37(c) [ENDORSED]
Replies: 3
Views: 311

Re: electron shielding 2.37(c) [ENDORSED]

This is because when an electron has a position closer to the nucleus, l=1 or even 1=0, it blocks off more attraction than one in a position after it, in this case l=2.
by Gurpreet Khamba 1J
Mon Oct 23, 2017 12:15 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: D Orbitals [ENDORSED]
Replies: 1
Views: 165

Re: D Orbitals [ENDORSED]

d has its special set. As the Professor mentioned, they are xy, xz, yz, (x^2) - (y^2), and z^2.
It does not appear to be important though but it wouldn't hurt to know the major differences, in terms of planes, between the 1st three and other two.
by Gurpreet Khamba 1J
Mon Oct 23, 2017 12:08 am
Forum: General Science Questions
Topic: Single Electons
Replies: 1
Views: 469

Re: Single Electons

No
by Gurpreet Khamba 1J
Mon Oct 23, 2017 12:06 am
Forum: Properties of Light
Topic: The uncertainty principle [ENDORSED]
Replies: 5
Views: 473

Re: The uncertainty principle [ENDORSED]

Only at the subatomic level do outside forces, such as those incurred by measurement (for example, with a light to start time) affect the recording of the data. Because they are so small, and can be easy influenced by everything.
by Gurpreet Khamba 1J
Sun Oct 15, 2017 9:41 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Orbitals as Probability
Replies: 2
Views: 225

Re: Orbitals as Probability

Since you cannot know the exact location of an electron in its orbital at all times, orbitals are depicted as clouds of probability. The only thing you can know for sure is that an electron can be find in the cloud, because of the pull from the center, the electron has to remain within a certain ran...
by Gurpreet Khamba 1J
Sun Oct 15, 2017 9:36 pm
Forum: Properties of Light
Topic: Lyman vs Balmer Series
Replies: 4
Views: 263

Re: Lyman vs Balmer Series

In the Lyman series, eletrons come to rest at n=1 whereas in the Balmer series, they come to rest at n=2. The latter records the light depicted in the visible light spectrum, the former records the light in the UV spectrum. Their are other series as well, but in short, the different series simply re...
by Gurpreet Khamba 1J
Sun Oct 15, 2017 9:16 pm
Forum: Properties of Light
Topic: Planck's Constant
Replies: 10
Views: 597

Re: Planck's Constant

It can also be used to find E (Energy) when the frequency is not known. To do this, you would use the relation v has with c (speed of light) and λ (wavelength). This results in the equation: E = (hv)/λ The constant is also used in the uncertainty principle. Max Planck received a Nobel Prize in 1981 ...

Go to advanced search