CHEMISTRY COMMUNITY

Matthew D 3F

I'm having a bit of trouble with what these are and how they relate to the quantum numbers and wavefunction. Can someone please explain what these are?

Matthew D 3F

Does it get progressively harder to remove electrons after the second (third, fourth, etc).

Matthew D 3F

How many unpaired electrons are predicted for the ground-state configuration of each of the following atoms:
(a) Bi; (b) Si; (c) Ta; (d) Ni?

What exactly is the question being asked here- is it just all the odd electrons in the outer p-shell?

Matthew D 3F

This is because of the amount of electrons in the p-orbitals of oxygen. There are 4 of them, and it is the first element where the p electrons have to be paired. This causes some repulsion energy between the electrons, so the ionization energy becomes lower because it takes less work to remove an el...

Matthew D 3F

The book also says that the three p-orbitals in a shell are degenerate both in hydrogen and in many-electron atoms, so I'm sure that the book is correct.

Matthew D 3F

Degeneracy entails the orbital of a shell all having the same energy.

Matthew D 3F

The Balmer series shows that n1 = 2. The next line is the fifth line, so n2 should be 7. In order to find the frequency, use the Rydberg equation, which is R*((1/(n1)^2)-(1/(n2)^2)). From there you can use λ = c/v to find the wavelength.

Matthew D 3F

To solve this problem, you get the equation E = hc/ λ. This comes from both E = hv and c = vλ. For part a, you just plug in the values, with λ being 589*10^9m

Matthew D 3F

To find the N2 molecules, you divide the mass of N in the sample by the molar mass of N2 (28.02 g/mol) to find the moles of N2, then you multiply that by Avogadro's number.

Matthew D 3F

You have to determine what the metal M is first. Then find the mass of its sulfide, which would be (Metal)S.

Matthew D 3F

As long as you get 7 done, you should be fine.

Matthew D 3F

A two step chemical reaction can have two limiting reactants, one for each step, but a single step chemical reaction can only have one limiting reactant.

Matthew D 3F

Would we need to know exact electronegativity values, or just their general trends on the periodic table?

Matthew D 3F

Hello, can I get a quick refresher on the elements that are exceptions from the octet rule?

CHEMISTRY COMMUNITY

Search found 14 matches

Nodes and Nodal Planes

Ionization Energies

2.51 6th Edition

Re: CH 2 6TH EDITION 2.81

Re: Degenerate orbitals

Re: Degeneracy

Re: 6th Edition Ch.1 #57

Re: Quantum Theory 1.25

Re: E 21 Sixth Edition

Re: Q E14

Re: Homework Problems

Re: Limiting reagents

Question for Exams [ENDORSED]

Octet Rule Exceptions