CHEMISTRY COMMUNITY

Nicole Jakiel 4F

How do you find the oxidation number when naming coordination compounds?

Nicole Jakiel 4F

What is the difference between amphiprotic and amphoteric, and how do you determine if something is amphiprotic or amphoteric?

Nicole Jakiel 4F

Can anyone clarify how to determine if a ligand is a polydentate, and how to determine what kind of polydentate it is? For example, how can you tell if it is a tetradentate?

Nicole Jakiel 4F

The lecture notes say that when naming coordinate compounds, ligand names are alphabetical order and then the transition metal cation name is written after the ligand name.

Nicole Jakiel 4F

I believe we will be expected to know how to use anything covered in the lecture notes - we went over the rules of naming coordinate compounds so it is probably best to know these rules and be able to use them.

Nicole Jakiel 4F

Can anyone clarify how do we identify amphoteric compounds? For example, is there any specific way to tell by looking at the compound's structure?

Nicole Jakiel 4F

I know that whenever there is a compound with a nitrogen that has a lone pair it can be identified as a base, but is there any characteristic like this that allows us to identify acids based on the compound's structure?

Nicole Jakiel 4F

In terms of hybridization, will we only need to figure out which hybridization will work? In other words, will we only need to find which hybridization will match the VSEPR model?

Nicole Jakiel 4F

I believe they are the same thing.

Nicole Jakiel 4F

How do we know which type of bond is present? In other words, how do we know when there is a pi bond or when there is a sigma bond?

Nicole Jakiel 4F

From my understanding they are the same thing, so it does not matter which term you use as they are both correct.

Nicole Jakiel 4F

According to the lecture notes:
Tetrahedral: the central atom has 4 bonding pairs
Square Planar: the central atom has 4 bonding pairs and 2 lone pairs

Nicole Jakiel 4F

For now I would really just draw the Lewis Structures every time- eventually you may begin to pick up on certain patterns but as of right now drawing the Lewis Structure first is the best way to go!

Nicole Jakiel 4F

What are dipole moments, and how do you know when they occur?

Nicole Jakiel 4F

How do you calculate dissociation energy?

Nicole Jakiel 4F

What is the difference between polarizability and polarizing power?

Nicole Jakiel 4F

Can anyone explain why Ni^2+ has two unpaired electrons? I understand how to get its ground state electron configuration, [Ar]3d^8, but I don't understand why it has two unpaired electrons (instead of zero unpaired electrons).

Nicole Jakiel 4F

Can anyone explain why the chemical formula for aluminum hydride is AlH3?

Nicole Jakiel 4F

When drawing Lewis Structures, how do we know if we need to draw a double bond, and how do you determine which element gets the double bond?

Nicole Jakiel 4F

The general trend that you need to remember is that electronegativity increases as you go up the periodic table and to the right! I believe this should be enough in order to figure out which elements are more electronegative than others.

Nicole Jakiel 4F

A full octet has eight valence electrons in it, and yes, each orbital needs to have eight electrons in it before you can move to the next orbital.

Nicole Jakiel 4F

One dot = one valence electron
If an atom has four valence electrons, then four dots are drawn around the symbol!

Nicole Jakiel 4F

Can anyone clarify what the Heisenberg Indeterminacy Equation actually tells us?

Nicole Jakiel 4F

Can anyone clarify when we would use the Schrodinger equation?

Nicole Jakiel 4F

During lecture one of the notes on the presentation stated, "Inner electrons shield outer electrons from electrostatic attraction of positive nucleus; outer electrons feel a reduced electrostatic attraction, results in an effective nuclear charge." Can anyone clarify what an effective nucl...

Nicole Jakiel 4F

You determine yes or no based on the numerical value you get after calculating the wavelength of the object. Extremely small numbers will not have wavelength properties as they are unlikely to be detected.

Nicole Jakiel 4F

We aren't going to be learning about them, as Dr. Lavelle mentioned that this is not something that we will be covering in the course material. He only mentioned it in class because he tends to get a lot of questions about it.

Nicole Jakiel 4F

I think with a calculated value this small, you would say that it does not have any wavelike properties because a number this small is not going to be detectable.

Nicole Jakiel 4F

I think with a calculated value this small, you would say that it does not have any wavelike properties because a number this small is not going to be detectable.

Nicole Jakiel 4F

To add onto the first question, do we need to write the states of matter every time we balance a chemical reaction?

Nicole Jakiel 4F

When converting from molecular to empirical formulas, do we just have to simplify in order to get the smallest ratio? For example, one of the homework problems provides us with a diagram of a molecule and asks us to find the molecular and empirical formulas (F 25, sixth edition). Just by counting th...

Nicole Jakiel 4F

I was wondering the same thing. When determining the empirical formula, I am pretty sure that we always assume/ imagine that the sample mass is 100 grams as this is the easiest way to convert the mass percentages into the mass (in grams). Can someone confirm if this is true for every problem where w...

CHEMISTRY COMMUNITY

Search found 32 matches

Oxidation Number

Amphiprotic vs. Amphoteric

Polydentates

Re: How to name

Re: naming coordination compounds for the final

Amphoteric Compounds

Identifying Acids and Bases

Hybridization

Re: Hybridization and Hybrid Orbitals

Bonds

Re: Angular vs Bent

Re: Square Planar vs Tetrahedral

Re: Determining Shape

Dipole Moment

Calculating Dissociation Energy

Polarizability vs. Polarizing Power

Number of Unpaired Electrons

Writing Chemical Formulas

Double Bonds In Lewis Structures

Re: electronegativity chart

Re: octets

Re: Lewis Structures

Heisenberg Indeterminacy Equation

Using the Schrodinger Equation

Effective Nuclear Charge

Re: Measurable wave length properties

Re: Importance of Black Bodies?

Re: Wavelike properties

Re: Wavelike properties

Re: States of Matter

Converting from Molecular to Empirical Formulas

Re: Empirical Formula