Chemistry

posted by .

Please help i don't get the answer. How much energy, in kilojoules per mole, is released when an electron makes a transition from n=5 to n=2 in an hydrogen atom?

  • Chemistry -

    E = 2.180E-19J x (1/4 - 1/25)
    1/4 is 1/n^2 = 1/2^2 for the lower level
    1/25 is 1/n^2 = 1/5^2 for the higher level

  • Chemistry -

    -5.10x10-19

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    Please help me answer the question below and also show equations and steps of how you came to your answer. Thank you 1. The electron in a hydrogen tom is in the first excited state, when the electron acquires an additional 2.86eV of …
  2. Physics

    Please help me answer the question below and also show equations and steps of how you came to your answer. Thank you 1. The electron in a hydrogen tom is in the first excited state, when the electron acquires an additional 2.86eV of …
  3. Chemistry

    1.) The average velocity of Cl(2) molecules is 2.50 x 10^3 m/sec at a temp of 25 C therefore the average velocity of helium atoms is ?
  4. chemistry

    What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=5 to n=2?
  5. College Chemistry

    In energy terms, ionization of an electron in an atom corresponds to the transition from whatever quantum state the electron is in to an energy of 0 KJ/mole. Calculate the energy in joules needed to remove one electron in the n=1 state …
  6. Chemistry

    When an electron makes a transition from the n=3 to the n=2 hydrogen atom bohr orbit, the energy difference between these two orbits (3.0x10^-19 J) is given off in a photon of light. The relationship ... between the energy of a photon …
  7. chemistry

    The electron from a hydrogen atom drops from an excited state into the ground state. When an electron drops into a lower-energy orbital, energy is released in the form of electromagnetic radiation. Part A: How much energy does the …
  8. Please Chemistry Help

    for the transition of an electron in a hydrogen atom between the principal quantum number levels 4 and 3, calculate a) the energy released b) the wavelength of the line in the spectra.
  9. chemistry

    (a)how much energy in KJ/mol is released when an electron makes a transition from n=5 to n=2 in a hydrogen atom?
  10. Chemistry

    I have this question from an old exam for review. I tried the question but can't get the right answers. An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission …

More Similar Questions