electron

  1. F

    How electron spin

    Hello How electron spin how it spin what does it mean
  2. K

    Valency electron

    Dear All, Fe has 26 electron,shell configuration is 2,8,14,2. The outer most shell has 2 valency electron ,so Fe 2+ . A well as Fe also have 3 valency electron by removing one paired electron from 3d6 and become 3d5, so already we have 2 electron in outermost shell now we received another...
  3. O

    Question regarding electron cloud modle

    Hi, Nitrate, Carbonate ions have resonance structures. So, they have delocalized pi electron clouds. We know that nitrate and carbonate ions have more than one lewis structure, but resonance structure is the most suitable one. My problem is this. How that the resonance structure is exist...
  4. K

    The distance between electron shells in an atom

    During our basic chemistry course, i was taught that electron shells were roughly the same distance, at least that is what the diagrams alluded to. However this is not the case but i am unsure on the reason why; Why are electron shells not spaced out equally? How do we know this?
  5. F

    Is there any change in mass as the electron changes energy levels.

    Does anything happen to the electron, as it changes energy levels, does its mass increase, or decrease, or velocity speed up, or slow down.? The electron will speed up when its away from the nucleus, when its in a higher shell like shell level 3. But is there anything like a visible sign that...
  6. F

    Is it known to science why electron energy levels change, as atoms become molecules,

    Is it known to science why electron energy levels change, as atoms become molecules, or why electron voltage requirement changes when the electron is from the nucleus in higher shell levels. So can it just he observed that electrons need a certain electron voltage to move to higher shell...
  7. F

    The more the electron is away from the nucleus in higher shells, does it only absorb

    The more the electron is away from the nucleus in higher shells, does it only absorb EM waves with higher energy, like ultra violet waves.? Like in glass, light does not get absorbed by the electron but ultra violet does. I am thinking the further away the electron is, then it only absorbs...
  8. T

    How does the electromotive force effect the electron for the band gap to change, to i

    How does the electromotive force effect the electron for the band gap to change, to increase, and decrease.? someone told me on a forum, "It takes energy, either in the form of light, heat or electromotive force to move electrons from one energy level to a higher one, while they will typically...
  9. M

    Atomic Structure

    Hi everyone! So we were given a hand out on atomic structure which is fairly straight forward to me for the most part however I am getting hung up on the one question and wondered if anyone might be able to help? We were asked to fill out a table with the atomic symbol, atomic number, mass...
  10. J

    Electron microscopy problem

    At a temperature of 400C, a crystal has a disordered distribution of Cu and Au atoms on a ccp array with an F lattice. At 280C, the structure changes to a P. How can you recognise the ordering of a thin specimen of the crystal in the heating stage on an electron microscope if the temperature was...
  11. K

    expanded valance electron?

    I reading a text about the unresolved chemistry problems. In which it says something about the expanded molecules (e.g. SF6) and hyperconjugation. I am completely puzzled in it. Can anyone tell me something about the expanded molecules and hyperconjuation. Ths a lot!!
  12. M

    Quantum Theory: Determining the delta E and wavelength of an Electron Transition

    Hi, In my chemistry textbook, there is one example of a question where an electron jumps from one energy level to another, and they ask you to calculate the change in energy and the wavelength of the photon. The sample question explains that you use Bohr's equation first to find delta E (Delta...
  13. A

    Electron Charge density ?

    Do you have any idea, WHat is meant by Electron charge density ?
  14. D

    Spectral Line Emission due to Electrons Changing Energy Levels

    An unbound electron is captured into the n=3 energy level of the hydrogen atom. It subsequently goes to the ground state. What is observed? (Hint: E1 is the energy of the ground state) A.) One spectral line with Energy E1/9 B.) Two spectral emission lines with energies E1/9 and (E1/9-E1/4) C.)...
  15. B

    Atomic cation electron configuration

    An atomic cation with a charge of has the following electron configuration: 1s2 2s2 2p6 3s2 3p4 I m having trouble with this one even though it's a very simple problem. The configuration fits Sulfur but S is not +2. It did mention in the bottom question how many 3d electrons does the ion have...
  16. M

    First Excited State electron configuration

    What is the core notation for the first excited state of Argon? I got[Ne] 3s1 3p6 41, but the answer says [Ne] 3s2 3p5 4s1. How come they don't take the electron from 3s1, not 3p5? Thanks!