Search found 31 matches

by sylvie_1D
Sun Jun 10, 2018 4:28 pm
Forum: Sigma & Pi Bonds
Topic: Pi bonds
Replies: 3
Views: 1508

Pi bonds

Hi, do Pi bonds only include the P orbital?
by sylvie_1D
Sun Jun 10, 2018 4:23 pm
Forum: Conjugate Acids & Bases
Topic: Conjugate Acids/Bases
Replies: 8
Views: 297

Re: Conjugate Acids/Bases

The way I like to think about it is that in the reactants side of a chemical reaction, the acid is what gives it's H+away and the base is what will receive the H+. Though on the products side, it's the product that receives the H+ that is the conjugate acid ( it would have been the base on the react...
by sylvie_1D
Sun Jun 10, 2018 4:19 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: Atomic radius and Electronegativity in strong acids.
Replies: 1
Views: 129

Atomic radius and Electronegativity in strong acids.

Hi I am confused as to what determines a strong acid. I know that a larger radius means a stronger acid and that when there is high electronegativity that makes something a strong acid as well. However in this question from chapter 12, part c), why is HClO2 a stronger acid than HBrO2, when Cl has a ...
by sylvie_1D
Thu Jun 07, 2018 5:19 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Bidentate [ENDORSED]
Replies: 2
Views: 65

Bidentate [ENDORSED]

Hi, so for a ligand to be Bidentate does that mean it has two electron pairs facing the same way as a metal atom and therefore are able to bind to the metal atom? For example the oxalate ion. The oxygens have many lone pairs allowing it to bind to another metal atom but how do you know which lone pa...
by sylvie_1D
Sat Jun 02, 2018 10:32 pm
Forum: Hybridization
Topic: Hybrid Orbitals and lone pairs
Replies: 2
Views: 60

Hybrid Orbitals and lone pairs

How do you account for lone pairs in hybridization?
by sylvie_1D
Sat Jun 02, 2018 10:27 pm
Forum: Hybridization
Topic: Amplitude and Hybridization
Replies: 2
Views: 57

Amplitude and Hybridization

Hi, I am confused as to how amplitude and orbital hybridization are related. Is it because taller amplitude allows of stronger hybridization?
by sylvie_1D
Sat Jun 02, 2018 10:23 pm
Forum: Hybridization
Topic: Electron Promotion
Replies: 1
Views: 54

Re: Electron Promotion

Hi, to my understanding Promotion is when an electron sharing an orbital in a lower energy state such as the s orbital, moves to an open orbital in a higher energy state, such as the P orbital. This lowers the overall energy of the atom because instead of sharing an orbital, it is in its own orbital...
by sylvie_1D
Sun May 27, 2018 11:46 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: shapes
Replies: 3
Views: 88

shapes

Hi what are the names of all the shapes we have learned in class?
by sylvie_1D
Sun May 27, 2018 11:39 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polar VS Nonpolar shapes
Replies: 4
Views: 112

Polar VS Nonpolar shapes

Hi, so for non polar molecules I understand that there must be dipole forces that cancel each other out, though what exactly does this mean and how do they "cancel". Do the dipole moments have to be equal in strength or do there simply have to be "dipole moments".
by sylvie_1D
Sun May 27, 2018 11:32 pm
Forum: Dipole Moments
Topic: Dipole
Replies: 4
Views: 129

Re: Dipole

I don't believe atomic radius affects dipole moments ( or we haven't talked about it). To my understanding it affects polarization more so. Ionization energy is a contributing factor in calculating an element's electronegativity and electronegativity affects what molecules can create dipole bonds/mo...
by sylvie_1D
Sun May 20, 2018 11:03 pm
Forum: Dipole Moments
Topic: Dipole induced Dipole interaction
Replies: 2
Views: 132

Dipole induced Dipole interaction

Hi I am confused as to what dipole induced dipole interactions are. Non polar and polar molecules interact with one another though according to the text, though it says that this is almost like a "permanent" moment? what does that mean and what properties does a molecule have to have to in...
by sylvie_1D
Sun May 20, 2018 10:58 pm
Forum: Ionic & Covalent Bonds
Topic: Formal charge?
Replies: 12
Views: 331

Re: Formal charge?

The purpose of formal charge is to find the lowest energy state possible for the molecule. Formal charge predicts what arrangment of atoms a molecule is most likely to be found in and create s a lewis structure with the lowest energy (0)
by sylvie_1D
Sun May 20, 2018 10:52 pm
Forum: Dipole Moments
Topic: the r power
Replies: 2
Views: 61

the r power

Hi I am confused as to where the powers of the "r" value originate from in the potential energy formulas for dipole dipole interactions and dipole induced dipole interactions. Does it have something to do with the rotation or the seperations of the atoms?
by sylvie_1D
Sun May 13, 2018 10:55 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic Bonds
Replies: 4
Views: 108

Ionic Bonds

Hi, so for Ionic Bonds atoms will give up an electron to another atom for that atom to form an octet. Is there a maximum amount of electrons one atom can give and are there any exceptions or rules that follow what atoms can form ionic bonds and which can not?
by sylvie_1D
Sun May 13, 2018 10:45 pm
Forum: Formal Charge and Oxidation Numbers
Topic: FORMAL CHARGE
Replies: 9
Views: 188

Re: FORMAL CHARGE

I find that drawing out the electron configuration helps give a good visual on how many lone pairs there are.
by sylvie_1D
Sun May 13, 2018 10:41 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Bonds
Replies: 4
Views: 234

Re: Bonds

It's because the additional electrons attract the nuclei stronger, pulling the atoms closer together.
by sylvie_1D
Sun May 06, 2018 2:00 pm
Forum: Trends in The Periodic Table
Topic: Atomic Radius [ENDORSED]
Replies: 4
Views: 110

Atomic Radius [ENDORSED]

Hi! So atomic radius decreases when you go across a period, thorough increase going down a group. I understand why it would increase going down a group ( there are more electrons), though using that same logic, there are more electrons across a period as well. So why wouldn't the atomic radius incre...
by sylvie_1D
Sun May 06, 2018 1:50 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: HW 2.39
Replies: 2
Views: 70

Re: HW 2.39

For number 39 electrons not int their lowest energy state possible are considered excited. For example, carbon is excited because it isn't at it's lowest energy configuration. In the 2p orbital instead of having two electrons in a one orbital, they should each occupy their own orbital as electrons w...
by sylvie_1D
Sun May 06, 2018 1:47 pm
Forum: Trends in The Periodic Table
Topic: The Ionization energy of Oxygen
Replies: 2
Views: 78

The Ionization energy of Oxygen

Hi! I was answering number 81 on the chapter 2 homework and it asked to explain why oxygen's ionization energy is lower than that of nitrogen. I am just a bit confused because the trend on the periodic table is that ionization energy increases across group, so why would oxygen's be lower than nitrog...
by sylvie_1D
Sun Apr 29, 2018 9:12 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron's Spin
Replies: 3
Views: 67

Electron's Spin

Hi, so during lecture, the concept that two electrons are paired if they have opposite spins, and are parallel if they have the same spin was discussed. What exactly does this mean conceptually and how would someone calculate it?
by sylvie_1D
Sun Apr 29, 2018 9:02 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: How to properly format your answers
Replies: 6
Views: 115

How to properly format your answers

Hi, so I was confused as to how to write the arrows regarding spin. Is it half an arrow, a full arrow, or does it not matter? Also, when writing out the inert gases along side the valance electrons, which come first?
by sylvie_1D
Sun Apr 29, 2018 8:55 pm
Forum: Quantum Numbers and The H-Atom
Topic: Nodal Planes- what are they exactly? [ENDORSED]
Replies: 6
Views: 1328

Nodal Planes- what are they exactly? [ENDORSED]

Hi, throughout this past weeks lecture, the term "nodal plane" was used very frequently to describe the shape and configuration of orbitals, though I am uncertain as to what they are.
by sylvie_1D
Sun Apr 22, 2018 7:48 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: The Uncertainty Principle
Replies: 2
Views: 75

The Uncertainty Principle

Hi! I am a bit confused on the conceptual understanding of the Heisenberg Uncertainty Principle. Is the principle stating that the exact position of an electron can be known, though the location of where it will be next is unknown, hence the uncertainty? Also, why does delta (p) x delta (x ) have to...
by sylvie_1D
Sun Apr 22, 2018 7:43 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect
Replies: 4
Views: 105

Re: Photoelectric Effect

The photoelectric effect occurs when photons hit a metal surface and the electrons in the metal collide with the electrons in the photon, causing some of the electrons to absorb some of the energy and some of it to be given off. The corresponding equation is : (E= hv) - ( the work function or thresh...
by sylvie_1D
Sun Apr 22, 2018 7:20 pm
Forum: Properties of Light
Topic: Interference [ENDORSED]
Replies: 3
Views: 92

Interference [ENDORSED]

Hi! What exactly is constructive interference and destructive interference? I understand the definition though I cannot picture a real life example.
by sylvie_1D
Sun Apr 15, 2018 11:06 pm
Forum: Properties of Light
Topic: wave length
Replies: 5
Views: 93

Re: wave length

The square of the Amplitude tells the intensity, or brightness, of the radiation.
by sylvie_1D
Sun Apr 15, 2018 11:00 pm
Forum: Properties of Light
Topic: Experiments in Chemistry
Replies: 2
Views: 68

Experiments in Chemistry

In the textbook there are many detailed descriptions about various experiments and scientist. Is this information for our own benefit or are we suppose to be able to recall scientists and experiments on our exams?
by sylvie_1D
Sun Apr 15, 2018 10:54 pm
Forum: Properties of Light
Topic: Wavelength
Replies: 3
Views: 118

Wavelength

Hi, I was wondering if "wavelength" is equivalent to the "period" on a trigonometric graph?
by sylvie_1D
Sun Apr 08, 2018 9:32 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Molar Mass
Replies: 9
Views: 343

Re: Molar Mass

You use the periodic table and look up the element's atomic mass. If you have a compound like h2o, you add up the atomic masses of 2(h) and 1 (o) to get the molar mass.
by sylvie_1D
Sun Apr 08, 2018 9:29 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: What do the coefficients/subscripts represent [ENDORSED]
Replies: 7
Views: 257

What do the coefficients/subscripts represent [ENDORSED]

Hi, so I was solving problem E29, and I was curious as to how many moles of hydrogen are there in 4H2O? Someone has told me 8 and another has told me 2.
by sylvie_1D
Sun Apr 08, 2018 9:16 pm
Forum: SI Units, Unit Conversions
Topic: Avagrado's Number [ENDORSED]
Replies: 6
Views: 265

Re: Avagrado's Number [ENDORSED]

I had this question as well! In the solutions manual they use atoms/molecules interchangeable with Avogadro Number so I assume yes, however that is an assumption.

Go to advanced search