CHEMISTRY COMMUNITY

Aryana Nazem 1A

Polarizability increases w atomic radius aka down a group bc their electron clouds can easily be distorted where as small highly charged cations have high polarizing power (decreases across a period)

Aryana Nazem 1A

Also to add does anyone know if we are responsible for naming complex ions before determining the oxidation number? Do we need to name the compounds like the chapter 17 hw questions say or will they be given to us??

Aryana Nazem 1A

When you have a molecule that is a tetrahedral in respect to the electron geometry but it has 1 lone pair or 2 would we just say the angles are less than 109.5 or would we have to be more specific?

Aryana Nazem 1A

Q: What is the show cesium and iodine love watching together?
A: CSI

Aryana Nazem 1A

Did you know that oxygen went for a second date with potassium?
How did it go?
It went OK2!

Aryana Nazem 1A

You can look at the number of electrons that are present in each molecule. If there are more lone pairs, they will repel each other and cause a longer bond to be formed. So for F when more electrons are added, it makes the bond longer? Yes in this case because you are adding more electrons and ther...

Aryana Nazem 1A

I do not think we will need to know how to name molecular structures for the final, however I could be wrong.

Aryana Nazem 1A

all bonds have one sigma bond, when you have two bonds there is one sigma and one pi bond, and when you have a triple bond you have your sigma and two pi bonds. I think this is an important rule to remember and to be able to distinguish

Aryana Nazem 1A

I believe you look at the 2 electrons in the 4s2 and the two electrons in the 3d2. This would be a total of 4 electrons ie. your four valenece electrons.

Aryana Nazem 1A

I was wondering if anyone knew how to treat lone pairs when trying to name the molecular geometry?

Aryana Nazem 1A

Q: Why do chemistry students do well when working with ammonia?
A: Because it's pretty basic stuff.

Aryana Nazem 1A

A photon checks into a hotel and is asked if he needs any help with his luggage.
He says, "No, I'm traveling light"

Aryana Nazem 1A

What do chemists call a benzene ring with iron atoms replacing the carbon atoms?

wait for it..

A ferrous wheel.

Aryana Nazem 1A

Nabeeha Khan 1D wrote:BrO IS a radical because it has an odd number of valence electrons, but I think you are confusing #55 and #56 as part D for #55 is not BrO and that is instead part D for #56. Hope that helps! :)

thanks so muchhhh nabz:)

Aryana Nazem 1A

Why is d.) not a radical since Br has 7 valence e- and O has 6 valence e- for an odd total of 13e-?

Aryana Nazem 1A

Okay thank you so much!

Aryana Nazem 1A

Specifically what hw questions we should know how to do for this test?

Aryana Nazem 1A

Does anyone know if the test for this quarter covers all of chapter 3?

Aryana Nazem 1A

Q: How did the hipster chemist burn his hand?
A: He picked up his beaker before it was cool.

Aryana Nazem 1A

Q: Why didn't the chemist enjoy doing chromatography?
A: He got separation anxiety.

Aryana Nazem 1A

Q: What's a pirate's favorite element? (your victim may assume "arrrrgon".)
A: Gold.

Aryana Nazem 1A

Okay, but for the midterm will we just have to know conceptually what this equation does or will be have to actually use it?

Aryana Nazem 1A

So basically if I understand this right, we would only be expected to know that after many dilutions you would have close to less than one molecule left? If that is right, would we have to show some sort of mathematical work for this?

Aryana Nazem 1A

Hey I was wondering if anyone could explain G.25 for me? I don't understand how to go about this, thanks in advance!! G.25 Practitioners of the branch of alternative medicine known as homeopathy claim that very dilute solutions of substances can have an effect. Is the claim plausible? To explore thi...

Aryana Nazem 1A

But why can't you find an electron in these planes?

Aryana Nazem 1A

Does anyone know if this equation will be fair game for our midterm? Also will we just have to know what it means conceptually or will we have to actually need to use it?

Aryana Nazem 1A

I assume that since test 2 is over which covered everything up until 1.5 we can do any hw problem after that.

Aryana Nazem 1A

Also can someone explain how the 4th quantum number ties into this topic?

Aryana Nazem 1A

does anyone know if we will be required to draw what the different atomic orbitals looks like?

Aryana Nazem 1A

I asked the guy sitting next to me if he had any Sodium Hypobromite…
He said NaBrO

Aryana Nazem 1A

A neutron walks into a bar. He asks the bartender, "How much for a beer?" The bartender offers him a warm smile and says, "For you, no charge."

Aryana Nazem 1A

Also can anyone explain the Stefan -Boltzmann Law??

Aryana Nazem 1A

what is the difference between absorption spectrum vs. emission spectrum?

Aryana Nazem 1A

For question 9 chapter one, when we are given a frequency of 300 MHz and we want to find the energy per photon I presume we just plug it into the E=hv formula but when i do this I get 2 x 10 ^-37 which is not the write answer for E.

Aryana Nazem 1A

what kinds of questions will we be asked to work out with this equation?

Aryana Nazem 1A

will we have to know all the early scientists who propsed differenttheories for the composition of an atom??

Aryana Nazem 1A

do we have to memorize the different wavelength frequencies corresponding to its color for future tests?

Aryana Nazem 1A

do we have to memorize the different wavelength frequencies corresponding to its color for future tests?

Aryana Nazem 1A

No, if i am understanding your question..(not sure if i am), because you are given the units of the ions in moles to begin with .Don't quote me though.

Aryana Nazem 1A

Hey okay so what i think is that when they ask for formula units it is the equivalent to atoms/molecules.

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