Search found 24 matches

by Samantha Draghi 1L
Sun Jun 10, 2018 11:05 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Porphyrin Ligand
Replies: 4
Views: 164

Re: Porphyrin Ligand

I was also wondering the same thing, would we need to know the types of ligands for the final?
by Samantha Draghi 1L
Sun Jun 10, 2018 10:59 am
Forum: Lewis Acids & Bases
Topic: Lewis vs Bronsted
Replies: 4
Views: 183

Re: Lewis vs Bronsted

I know that there is another definition of acids and bases but do we need to know that or is it just lewis and bronsted definitions of acids and bases that we need to know for the final?
by Samantha Draghi 1L
Sun Jun 10, 2018 10:51 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Shape of AX5E
Replies: 5
Views: 243

Re: Shape of AX5E

If the question is asking for the molecular geometry, a molecule with five bonds and an electron pair it would be square pyramidal, although if the question asks for the electron-pair geometry, the same molecule since it has six regions of electron density, it would be considered octahedral.
by Samantha Draghi 1L
Sun Jun 03, 2018 2:31 pm
Forum: Hybridization
Topic: Hybrid Orbitals and lone pairs
Replies: 2
Views: 76

Re: Hybrid Orbitals and lone pairs

hybridization can be calculating based off how may regions of electron density surround an atom so in the case of lone pairs, they make up one region of electron density therefore one additional orbital. For example if an atom has three bonds and a lone pair it has an sp3 hybridization.
by Samantha Draghi 1L
Sun Jun 03, 2018 2:24 pm
Forum: Hybridization
Topic: σ bonds
Replies: 9
Views: 240

Re: σ bonds

sign bonds allow atoms to rotate while pi bonds do not. This is because the end-to-end overlap of the atomic orbitals, while in pi bonds there is a side-by-side orientation
by Samantha Draghi 1L
Sun Jun 03, 2018 2:20 pm
Forum: Hybridization
Topic: Hybridization
Replies: 3
Views: 122

Re: Hybridization

Hybridization is the mixing of orbitals. You can determine it by figuring out how many regions of electron density there are around a certain atoms. For example if there are 4 regions of electron density the hybridization will be sp3 (s, p, p, p) This will also help to determine the shape of the mol...
by Samantha Draghi 1L
Sun May 27, 2018 2:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Remembering Bond Angles
Replies: 4
Views: 165

Re: Remembering Bond Angles

I believe we will need to know bond angles but most shapes are very easy such as if the molecule has four atoms attached to the central atom you would divide by 360 degrees to get each bond angle being 90 degrees so for the most part it is not really about memorizing but understanding shapes.
by Samantha Draghi 1L
Sun May 27, 2018 2:11 pm
Forum: Lewis Structures
Topic: 2 lone pairs
Replies: 5
Views: 174

Re: 2 lone pairs

Yes I think that they go on opposing sides so that they do not pull on just one side of the molecule
by Samantha Draghi 1L
Sun May 27, 2018 1:59 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Types of Bonds
Replies: 6
Views: 159

Re: Types of Bonds

Sigma bonds allow molecules to rotate while pi bonds do not which means that if there is more than one bond (double or triple) there must be pi bonds because if the atoms were to rotate it would need to break a bond to change the chemical composition of the molecule
by Samantha Draghi 1L
Sat May 19, 2018 1:26 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Lewis Structure [ENDORSED]
Replies: 7
Views: 246

Re: Lewis Structure [ENDORSED]

It does not matter where your lone pairs go or really where your bonds are as long as you have all of the electrons and the correct formal charge.
by Samantha Draghi 1L
Sat May 19, 2018 12:45 pm
Forum: Resonance Structures
Topic: Resonance Structures [ENDORSED]
Replies: 4
Views: 164

Re: Resonance Structures [ENDORSED]

I was confused about this too. I also was wondering if there are resonance structures are there a certain amount? and how do you know?
by Samantha Draghi 1L
Sat May 19, 2018 12:41 pm
Forum: Lewis Structures
Topic: Creating a Lewis Stucture
Replies: 8
Views: 219

Re: Creating a Lewis Stucture

I believe withe the exception off hydrogen you start with the lowest ionization energy element and since there will be multiple central atoms you can just build from there as long as when you are finished you satisfy the correct formal charge
by Samantha Draghi 1L
Sun May 13, 2018 3:05 pm
Forum: Lewis Structures
Topic: Charge and Structures
Replies: 2
Views: 78

Re: Charge and Structures

I would not think that there are any exceptions so I would try to always arrange your Lewis structure so that the formal charges match the charge of the molecule
by Samantha Draghi 1L
Sun May 13, 2018 2:52 pm
Forum: Lewis Structures
Topic: Most Important Lewis Structure
Replies: 4
Views: 138

Re: Most Important Lewis Structure

I'm not exactly sure but I would say that it is asking for the most stable lewis structure with a formal charge of zero
by Samantha Draghi 1L
Sun May 13, 2018 2:50 pm
Forum: Trends in The Periodic Table
Topic: Ionization Energy vs. Electron Affinity
Replies: 4
Views: 168

Re: Ionization Energy vs. Electron Affinity

I am a bit confused by this too, so if an element has a high electron affinity meaning that it wants to become stable does this mean that it takes a lot of energy to add an electron or a small amount?
by Samantha Draghi 1L
Sun May 06, 2018 2:25 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Importance of Nodal Planes
Replies: 1
Views: 92

Re: Importance of Nodal Planes

Nodal planes show us where the probability of finding an electron is zero. This helps us to understand how the orbitals are configured around these planes which is why there are a set of configurations such as Px, Py, and Pz because the P orbital can only be structured around the plane in which elec...
by Samantha Draghi 1L
Sun May 06, 2018 2:15 pm
Forum: Trends in The Periodic Table
Topic: The Ionization energy of Oxygen
Replies: 2
Views: 93

Re: The Ionization energy of Oxygen

I am confused about this too because if a half filled subshell causes it to be more stable and have a lower ionization energy than would this be the same as for Sulfur having a lower ionization energy than Phosphorous? and if so then why is the trend of ionization energy across a period increasing?
by Samantha Draghi 1L
Sun May 06, 2018 1:58 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: HW 2.29 [ENDORSED]
Replies: 4
Views: 205

Re: HW 2.29 [ENDORSED]

No two electrons in an atom can have the same quantum numbers so therefore in b and d the only electrons that can have the same n, l, and ml would be if the electron is either spin up or spin down giving us only 2 options for electrons. On the other hand in something like A they could have those qua...
by Samantha Draghi 1L
Sun Apr 29, 2018 9:56 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: HW 2.31 [ENDORSED]
Replies: 5
Views: 191

Re: HW 2.31 [ENDORSED]

the d orbitals start at 3 so a 2d orbital cannot exist, further the g orbital is not an orbital that one cannot be true either
by Samantha Draghi 1L
Sun Apr 29, 2018 9:51 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Using shorthand [Ar] [ENDORSED]
Replies: 5
Views: 109

Re: Using shorthand [Ar] [ENDORSED]

I think you can use any of the noble gases that come previous to the element you are describing.
by Samantha Draghi 1L
Sun Apr 29, 2018 9:49 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: How to properly format your answers
Replies: 6
Views: 135

Re: How to properly format your answers

Professor Lavelle stated that when writing them out you typically will use half arrows but in his slides he could only manage full arrows that is why there is the difference. Also I believe that the noble gas will go first.
by Samantha Draghi 1L
Sun Apr 22, 2018 10:54 pm
Forum: General Science Questions
Topic: Tools for remembering equations
Replies: 5
Views: 494

Re: Tools for remembering equations

The equations will be provided to you for each test but make sure you familiarize yourself with them enough before so that you know which one to use or what the variables stand for.
by Samantha Draghi 1L
Sun Apr 22, 2018 10:50 pm
Forum: Significant Figures
Topic: Use of sigfigs
Replies: 8
Views: 333

Re: Use of sigfigs

He said not to get hung up on sig figs during all of your equations but I think it is useful to be conscious of your use of them so that your answers are not too vague or too long
by Samantha Draghi 1L
Sun Apr 22, 2018 10:45 pm
Forum: Properties of Electrons
Topic: Wave Properties: Constructive and Destructive Interference
Replies: 2
Views: 185

Re: Wave Properties: Constructive and Destructive Interference

The way I understood it is that changes in amplitude measures the amount of photons in a wave this means that the increase in amplitude would increase the amount of energy.

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