Configuration Definition and 253 Threads

I am trying to find a clear description of what makes the convergence of the error in electronic energy with respect to orbital basis set less rapid in CI calculations than in HF calculations. Can anyone help to find the reason?

Homework Statement The problem is: find all possible quantum numbers for each electronic configure of carbon. 2. The attempt at a solution I don't quite understand what the question is asking. Does it ask first write down the electronic configuration and write down all quantum number...

Homework Statement Al3+ N3- Li+ Au+ Sr2+ Mn2+ Tl+ Br - Homework Equations The Attempt at a Solution no clue, the positives and negatives are messing me up

Write the electron configuration of Cd2+ Is It right if I write it like this 1s^2 2s^2 2p^6 3s^1 3p^6 3d^10 4s^2 4p^6 5s^2 4d^10? Can anyone please correct me if it is wrong? Thank you very much!

Homework Statement What is the electron configuration for Gd? Homework Equations None The Attempt at a Solution Since Gd has 64 electrons, I would assume that the electron config. is: [Xe]6s24f8 Apparently this is wrong. The hint the question gives is that the last two...

11. Which one of the following sets of quantum numbers (n, l, ml, ms) could not possibly describe one electron of an arsenic atom (Z = 33) in its ground state? (A) 2, 1, -1, 1/2 (B) 4, 2, 2, -1/2 (C) 3, 0, 0, -1/2 (D) 3, 2, -2, 1/2 (E) 4, 1, 0, 1/2 Solution: Electron configuration...

If you calculate W, the amount of work it took to assemble this charge configuration if the point charges were initially infinitely far apart, you will find that the contribution for each charge is proportional to {kq^2}/{L}. In the space provided, enter the numeric value that multiplies the...

I have a question about something that has been bothering me for a while... In all of my chemistry classes, my professors have always told me that it is impossible to predict which way a chiral molecule will rotate plane-polarized light (i.e., you will see if a molecule is D or L, but, saying...

1. A simple magnetic field configuration is given by \vec{B}=ax\hat{y}+by\hat{x}. What is the current in this system? Assume that a and b are constant.2. Maxwells equations. 3. I'm not exactly sure what is being asked here. Off the top of my head I would like to say the answer is...

I just need to refresh my memory: When writing electron configurations for elements in the d block such as Iron (Fe), would you write it like this: 1s2 2s2 2p6 3s2 3p6 4s2 4d6 OR like this: 1s2 2s2 2p6 3s2 3p6 4s2 4p6 4d6

Ok, I really need a laptop that I can record video sessions with. It's very important to me that my laptop will run smoothly. Will this configuration run smoothly? I'm emphasizing it because I remember when my Mom got her laptop with "Vista" it was sooo freakn slow, lol. I was laughing so...

I am looking for a good, free, distributed Unix/Linux based software CM tool (or set of tools). I want the tool to cover the three main areas of sofware CM: change/defect management, revision management, and release management. I am looking at Trac, Bugzilla, and Mantis for change management and...

Hello, I've been trying to learn about electron configuration in atoms, and how it is calculated. I pretty much figured out a lot of it from doing my own research. From what I understand, each group in the periodic table represents a different electron shell, and the blocks S, P, d, and F...

We use, among others, Penning pressure gauges for determining pressures (aprox. 1E-7 to 1 mbar (about the same in Torr... for the Americans here ;-) ). The Penning is placed just outside the recipient, behind a valve to make sure its never in pressures of 1mbar or more. When using a smaller...

right in full notation, and core Full Ca 2+ = 1s2 2s2 2p6 3s2 3p4 Core Ca 2+ = [Ar] 4s2 - what happens when the 4s2 cancells out?

How would I write the configuration for ions? Would I alter the last subshell (e.g. 1s2 2s2 2p6 3s2 3p6 4s2 3d10: I change 3d10) or the shell with the n and l (1s2 2s2 2p6 3s2 3p6 4s2 3d10: I change 4s2)? Thanks.

Homework Statement What is the atomic number if the electron config is 1s2, 2s2, 2p6, 3s2, 3p4.Homework Equations How do I solve for electron configurations using a periodic table?The Attempt at a Solution I don't really have any, I am studying for a mid-term and this is all stuff I barely...

I'm not very well versed in the photoelectric effect, but as it happens, I found a brief description of it in my chem book. I'm really curious to know what really occurs to an atom's configuration right after its exposed to light. Let's say a photon hits a Zinc atom at threshold level and its...

queston Determine electronic configuration of Fe and the ground state using hunds rule Equations Hunds rule my attempt got the configuration easy enough 1s2 2s2 2p6 3s2 3p6 3d6 4s2 problem I have is with huunds rule can't get started I am sure one example and il be ok with it.

-------------------------------------------------------------------------------- 1. Homework Statement The electrons of a nelectronically-excited neutral magnesium atom have the coniguration 1s^2 2s^2 2p^6 3p 3d. Provide spec notation for the possible quant states of the atom as a whole...

[SOLVED] Electron Configuration Something in chemistry really has me perplexed. We are doing electron configuration stuff. I think I have a fairly good grip on it after I was able to let go of the Bohr Model. My question is this. Chromium has 24 electrons which should fit into the first...

Hello! I am working on a project at the moment and I have the option of connecting my capacitors in a number of different ways. My question deals with the possible difference in time, resistance to my circuit depending on where I connect the leads. What I really want to know is if there will...

Homework Statement Say you have a mass in the center of a room (equilibrium (x,y) = (0, 0)) that is connected to one wall via a spring along -x axis and to another wall via a spring along -y axis (the axes are parallel with each wall, respectively.) If I know F(x,y) and the velocity at a...

Why are all of the reactor core rod assemblies I see in an overall hexagonal arrangement with rods of uniform cross section (I assume due to modularity and mass production benefits)? Could not some abstract and variable rod cross-sections produce a more efficient reactor?

Homework Statement Use the periodic table to write the electron configuration of Gd. Homework Equations The Attempt at a Solution Gd has 64 electrons (atomic number 64) so I would assume that the configuration would be: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f8 5s2 5p6 6s2...

I need help with this problem :) Problem: Give the quantum numbers (n, l, ml, ms) for each electron in one neutral carbonatom in ground state. My solution: I look at a table to get the electron configuration and for a carbonatom i get 1S^2 2s^2 2p^2 For s n=1, l=0, ml=0, ms=+-1/2...

Hi marcus! It seems to me that there are many different approaches, from around the world, that are converging at an accelerated pace. Maybe not? … It might just be my desire to understand minimum length. http://arxiv.org/PS_cache/arxiv/pdf/0704/0704.2397v1.pdf The Quantum Configuration...

Hi, I am new member of this forum, and I have one question for you. When the atom have 8 electrons in the last shell, why it have stable configuration? What makes the atom to be stable and what makes the atom to be reactive? I know few things about this. Generally speaking the CH2 molecule is...

In Configuration Interaction scheme Why does inclusion of excited states (unfilled states) in the basis set improve accuracy? What is missing in the model which is accounted for by inclusion of suc h virtual states. My guess is the the born-oppenheimer approximation but not sure??

MY config is Intel P4 1.5 Ghz 256 MB RAM

I want to know about configuration of some ICs. Please tell me any good site in ths regard. In particular, can you give me information about 4xxx and 7xxx series of ICs. Thanks

Homework Statement Explain why copper(II) is the more common oxidation state than copper (I) by giving the electronic configurations of the ions involved. The Attempt at a Solution i've considered about the configurations of Cu+ and Cu2+ but the result seems to contradict the fact...

Could someone please help me finish the nobel gas configuration for uranium? I get as far as [Rn] 7s2, but I can't figure out what goes next.

I am not a chess player. I wonder if it would be possible for someone to give me a valid board configuration where one colour (preferably white) has lost several pieces more than the other and is now in check.

Does anyone know if there are descriptions of the neutron and proton configurations in atoms and why certain configurations are more stable than others. For example the average atomic mass of oxygen and flourine are the whole numbers 16 and 19 while most other elements have more variation...

Do the matter and radiation of a flat universe, as time approaches infinity, conform to a spherical shell?

Why are the d electrons less effective in shielding the nuclear charge than the s or p electrons, and are thus more polarizing?

I'm in an aerodynamics class, and I have this canard configuration I'm trying to figure out for a final exam. I need to find the sum of the moment about the center of gravity. I may cannot be helped without the drawing being posted. So far this is what i have: Mcg = Mac - (lcg + lw)Lw +...

In particular which configuration you will advise for memory distribution and in particular i am always puzzled by this cache memory:confused:

why is the electron configuration different for Z<20 and Z>90?

I would like to understand how I can configure IIS as my localhost, ISS doesn't have config file as does Apache ? After installing IIS, I tried accessing localhost but I was asked for username/password which I had never set up any, Thanks for any instructions you offer.

I used to understand this -- a few years ago -- but it has completely slipped my mind. What is going on with al this 1s2 and Like Cs[Xe]6s1? Thanks a lot, Mk

Which of the following three sets consist of atoms or ions with the same electron configuration in the ground state? I. O (2-), Ne, and Mg (2+) II. Ni, Cu+, Zn 2+ III. Hg, Tl+, and Pb (2+) a. all but (II) b. all but (I) c. all three sets d. only (I) Is it all but ii. because Cu...

Which principle or rule must be used to determine the correct electronic configuration for carbon in its ground state? a.Aufbau Principle b. Hund's Rule c. Pauli Exclusion Principle d. (A) and (B) only e. All three I know for a fact that Aufbau's and Hunds rule deal with ground state...

A sphere of radius R carries a charge density kr(where k is a constant!).What will be the energy of the Configuration??

Imagine a moderately long beam fixed at one end to a wall. Near the end of the beam, a very heavy weight is kept on top of the beam. At the same spot, two small beams are fixed under the main beam in a V shaped configuration such that the two beams form a sort of "press fit" i.e. they exert a...

-how would one predict electron configuration of an atom? (ex.Rb- [Ar]4s^2, 3d^10, 4p^6) ...How, help please

The requirements, posed on a system given by the configuration coordinates q(t) = (q^1(t), q^2(t), ...) that (1) they be subject to 2nd-order equations of motion: q'(t) = v(t), v'(t) = a(q(t),v(t)) and (2) have a classical configuration space at each time: [q^i(t), q^j(t)] = is nearly...

OK, I need some help here. I can´t really recognize the type of transistor configuration on a circuit (common emitter, common base, common colector). I`ll some tips that help me identify the configuration. Check the circuit attached.

Verizon is my DSL provider. I have difficulty logging into my.verizon.net (subscriber homepage) from Mozilla and from Firefox, but no problem logging in with Internet Explorer. In Internet Explorer I go to the verizon login page, enter username & password, and it loads (in the same...