Search found 35 matches

by Arshia Ramesh 1G
Sat Dec 08, 2018 12:03 pm
Forum: Sigma & Pi Bonds
Topic: Test 3 Q3D
Replies: 4
Views: 61

Re: Test 3 Q3D

you should draw the two pi bonds next to each other because pi bonds prevent rotation. they are essentially two electron density regions that are on each side of the intermolecular axis
by Arshia Ramesh 1G
Wed Dec 05, 2018 12:07 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Ligands
Replies: 7
Views: 63

Re: Ligands

Joey Greco 1F wrote:Ligands must have at least 1 lone pair

why do they have to have at least one lone pair?
by Arshia Ramesh 1G
Wed Dec 05, 2018 12:06 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: AX2E2
Replies: 14
Views: 162

Re: AX2E2

the bond angle should be less than 109.5 because of the lone pair repulsion
by Arshia Ramesh 1G
Wed Dec 05, 2018 12:05 pm
Forum: Ionic & Covalent Bonds
Topic: Bond Lengths
Replies: 5
Views: 72

Re: Bond Lengths

single bonds are the longest and the weakest, triple bonds are the shortest and strongest
by Arshia Ramesh 1G
Tue Dec 04, 2018 1:30 pm
Forum: Ionic & Covalent Bonds
Topic: Bond Order
Replies: 4
Views: 60

Re: Bond Order

no problem!
by Arshia Ramesh 1G
Tue Dec 04, 2018 1:29 pm
Forum: Ionic & Covalent Bonds
Topic: Bond Order
Replies: 4
Views: 60

Re: Bond Order

it also indicates the stability of a bond
by Arshia Ramesh 1G
Mon Dec 03, 2018 12:38 pm
Forum: Naming
Topic: 17.29 6th edition
Replies: 2
Views: 37

Re: 17.29 6th edition

so you would write OH2 not H2O right?
by Arshia Ramesh 1G
Sun Dec 02, 2018 6:24 pm
Forum: Naming
Topic: 17.33 6th edition
Replies: 1
Views: 56

17.33 6th edition

How are you able to tell the maximum number of places on the ligand that can bind simultaneously to a single metal center for CO3 2-? Do you have to draw out the lewis structure?
by Arshia Ramesh 1G
Sun Dec 02, 2018 6:06 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: exceptions
Replies: 6
Views: 161

Re: exceptions

thank you!!!
by Arshia Ramesh 1G
Sun Dec 02, 2018 6:05 pm
Forum: Hybridization
Topic: pi vs sigma
Replies: 12
Views: 117

Re: pi vs sigma

okay thank you so much!!!
by Arshia Ramesh 1G
Sun Dec 02, 2018 6:04 pm
Forum: Naming
Topic: 17.29 6th edition
Replies: 2
Views: 37

17.29 6th edition

When do you write (OH2) vs (H2O)? I thought since the O is the element that is bonding, you write OH2, but the solutions show that you write H2O. Can someone please explain?
by Arshia Ramesh 1G
Wed Nov 28, 2018 11:56 am
Forum: Dipole Moments
Topic: Examples of Intermolecular forces
Replies: 2
Views: 48

Re: Examples of Intermolecular forces

Thank you so much!
by Arshia Ramesh 1G
Wed Nov 28, 2018 11:54 am
Forum: Dipole Moments
Topic: Intermolecular forces
Replies: 4
Views: 60

Re: Intermolecular forces

thanks so much for the link!
by Arshia Ramesh 1G
Wed Nov 28, 2018 11:30 am
Forum: Hybridization
Topic: pi vs sigma
Replies: 12
Views: 117

pi vs sigma

i read on one of the reviews that a pi bond is weaker than a sigma bond but why is that?
by Arshia Ramesh 1G
Sun Nov 18, 2018 5:19 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Polar v. Non Polar
Replies: 7
Views: 115

Re: Polar v. Non Polar

Look at the electronegativity when you're trying to determine if something is polar/nonpolar
by Arshia Ramesh 1G
Sun Nov 11, 2018 11:13 pm
Forum: Ionic & Covalent Bonds
Topic: Van der Waals vs Dispersion Forces
Replies: 8
Views: 70

Re: Van der Waals vs Dispersion Forces

London dispersion is one of the types of Van der waal forces.
by Arshia Ramesh 1G
Sun Nov 11, 2018 11:05 pm
Forum: Ionic & Covalent Bonds
Topic: Hydrogen bonding
Replies: 7
Views: 128

Re: Hydrogen bonding

The further apart the two atoms are (longer bond length) the easier they are to separate or break apart
by Arshia Ramesh 1G
Sun Nov 11, 2018 11:03 pm
Forum: Ionic & Covalent Bonds
Topic: delta positive delta negative
Replies: 15
Views: 227

Re: delta positive delta negative

I think if it accepts electrons is delta negative
by Arshia Ramesh 1G
Tue Oct 30, 2018 10:14 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: exceptions
Replies: 6
Views: 161

exceptions

Why is it that chromium's electron configuration is [Ar]3d^5 4s^1? I get the [Ar] but why is it 3d^5 instead of 3d^4?
by Arshia Ramesh 1G
Mon Oct 29, 2018 11:47 am
Forum: *Particle in a Box
Topic: Midterm
Replies: 14
Views: 449

Re: Midterm

Where is last year's midterm on ccle?
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:52 pm
Forum: Ionic & Covalent Bonds
Topic: Question regarding ionic bonds
Replies: 9
Views: 78

Re: Question regarding ionic bonds

Yes ionic bonds are always between a metal and a non metal.
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:47 pm
Forum: Ionic & Covalent Bonds
Topic: Roman numerals next to element
Replies: 8
Views: 122

Re: Roman numerals next to element

It means the charge of the element!
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:43 pm
Forum: Ionic & Covalent Bonds
Topic: the Octet rule
Replies: 21
Views: 180

Re: the Octet rule

Are H, He, Li, Be the only four that are exceptions?
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:38 pm
Forum: Ionic & Covalent Bonds
Topic: ionization energy
Replies: 3
Views: 36

ionization energy

Can someone please explain why elements with high ionization energies are not likely to form cations and conduct electricity?
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:35 pm
Forum: Ionic & Covalent Bonds
Topic: bound atoms
Replies: 8
Views: 74

Re: bound atoms

When atoms are bound together they release energy, so they have less energy than an atom that is not bounded with another atom.
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:24 pm
Forum: Quantum Numbers and The H-Atom
Topic: Degeneracy
Replies: 3
Views: 88

Re: Degeneracy

Degenerate means that all of the orbitals of a shell have the same energy. The textbook also says (on p.36 of 6th edition) that the degeneracy orbitals with the same principal quantum number but different orbital angular momentum values is true only of the hydrogen atom and one-electron ions like he...
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:15 pm
Forum: Properties of Light
Topic: Is light in waves or photons?
Replies: 10
Views: 199

Re: Is light in waves or photons?

Light has the both the properties of waves and of particles.
by Arshia Ramesh 1G
Sun Oct 28, 2018 11:12 pm
Forum: Photoelectric Effect
Topic: HW 1.3
Replies: 4
Views: 116

Re: HW 1.3

I think C is the correct answer because frequency decreases causing a change in the wavelength which causes the slope of the wave to also decrease as a result.
by Arshia Ramesh 1G
Sun Oct 28, 2018 12:10 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Valence shell and other electrons
Replies: 4
Views: 74

Re: Valence shell and other electrons

The effective nuclear charge correlates to the atomic number so the an atom with a greater pull of electrons to the nucleus will have a higher atomic number.
by Arshia Ramesh 1G
Fri Oct 05, 2018 2:41 am
Forum: Limiting Reactant Calculations
Topic: multiple limiting reactants
Replies: 9
Views: 98

Re: multiple limiting reactants

I don't think that there can be two limiting reactants especially if there are only two products.
by Arshia Ramesh 1G
Thu Oct 04, 2018 11:29 pm
Forum: Empirical & Molecular Formulas
Topic: chemical formulas
Replies: 4
Views: 61

Re: chemical formulas

BrINClHOF
by Arshia Ramesh 1G
Thu Oct 04, 2018 10:19 pm
Forum: Balancing Chemical Reactions
Topic: Balancing reactions tips
Replies: 29
Views: 545

Re: Balancing reactions tips

I usually start by writing all of the coefficients on the side of the reaction that they occur.
Then I continue balancing both sides starting with the element in the least amount.

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