Question

The absorption spectra of ions have been used to identify the presence of the elements in...

The absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. What is the energy of a photon (in J) that is absorbed by He+ ions, when an electron is excited from the Bohr orbit with n = 1 to the n = 6 state? The energy of an electron in the nth level is? En= -BZ^2/N^2

0 0
Add a comment Improve this question Transcribed image text
Answer #1

He+ ,    Z = 2

wave number =   Z^2 Rh [1/n1^2 - 1/n^2]

                     = 2^2 x (1.0973 x 10^7) [1/1^2 - 1/6^2]

                    = 4.27 x 10^7 m-1

energy = h C wave number

            = (6.625 x 10^-34 ) x (3 x 10^8) x ( 4.27 x 10^7 )

            = 8.48 x 10^-18 J

energy of a photon = 8.48 x 10^-18 J

Add a comment
Know the answer?
Add Answer to:
The absorption spectra of ions have been used to identify the presence of the elements in...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • The absorption spectra of ions have been used to identify the presence of the elements in...

    The absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. What is the energy of a photon (in J) that is absorbed by He+ ions, when an electron is excited from the Bohr orbit with n = 1 to the n = 4 state? The energy of an electron in the nth level is:

  • Simplified. The absorption spectra of ions have been used to identify the presence of the elements...

    Simplified. The absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. What is the energy of a photon (in J) that is absorbed by He+ ions, when an electron is excited from the Bohr orbit with n = 1 to the n = 8 state? The energy of an electron in the nth level is - BZ2 En =- n? where B = 2.18 x 10-18...

  • Simplified. The absorption spectra of ions have been used to identify the presence of the elements...

    Simplified. The absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. What is the energy of a photon (in J) that is absorbed by He ions, when an electron is excited from the Bohr orbit with n = 1 to the n = 6 state? The energy of an electron in the nth level is 2 B2 2 where B = 2.18 x 10-1° J and...

  • Laboratory questions: Atomic Emission Spectra This sheet has to be returned with your lab report and...

    Laboratory questions: Atomic Emission Spectra This sheet has to be returned with your lab report and placed at the annex section A one electron excited ion (not hydrogen) absorbs a green photon: 2 - 542 nm. The electron, initially at the Bohr energy level n=8, moves to the level n = 14 after the photon absorption. Identify this ion (hint: find the Z value).

  • 1. The energy of the electron in the lowest level of the hydrogen atom (n=1) is...

    1. The energy of the electron in the lowest level of the hydrogen atom (n=1) is -2.179×10-18 J. What is the energy of the electron in level n=5? -8.716×10-20 J (Answer is correct) 2. The electron in a hydrogen atom moves from level n=4 to level n=1. Is a photon emitted or absorbed? What is the wavelength of the photon? 3. An excited hydrogen atom emits a photon with a wavelength of 102.6 nm. In what region of the spectrum...

  • Bohr model of an atom In the Bohr model of an atom (see figure below) the...

    Bohr model of an atom In the Bohr model of an atom (see figure below) the electrons move on fixed circular orbits around the nucleus. On the th orbit the magnitude of the angular momentum of the electron is given by where ћ 6.626 x 10-34 m 2 kg/s is the reduced Planck constant. +Ze (a) Calculate the radius r of an electron orbit in the hydrogen atom. Express your answer in terms of n, ћ, co, the electron charge...

  • 05 Question (4 points) When a hydrogen atom absorbs a photon of electromagnetic radiation (EMR), the...

    05 Question (4 points) When a hydrogen atom absorbs a photon of electromagnetic radiation (EMR), the internal energy of the atom increases and one or more electrons may be energized into an excited state. The release of this extra energy as the excited state electron transitions back to a lower energy state results in the emission of a photon. These energy changes are responsible for the emission spectrum of hydrogen (shown below) and are described by the Bohr equation. AE...

  • Bohr Model - Line Spectra 2 -0.07.ww Bohr's Model - Line Spectrum in eV:E, --13.6.1-1.2.3.4. SE-EE...

    Bohr Model - Line Spectra 2 -0.07.ww Bohr's Model - Line Spectrum in eV:E, --13.6.1-1.2.3.4. SE-EE Emitted lines Electrons in hydrogen atoms are in the n = 7 state (orbit). They can jump up to higher orbits or down to lower orbits. Emitted Spectral lines: When electrons in the higher orbits (with higher energies) jump DOWN to Lower orbits (with lower energies), energies are emitted in the form of emitted photons (light). The electrons jump from n = 7 state...

  • At what temperature might you expect to have populated an excited state E 2 to about...

    At what temperature might you expect to have populated an excited state E 2 to about 10% of N I fron1 a ground state E 1 when the energy level difference is 5 x 10^-20 J? What wavelength photon ,would be associated with the absorption between these two states? Degeneracies can be assumed to be one,

  • Answers for questions 1-12 please The energy level diagram for a hydrogen atom is shown. The...

    Answers for questions 1-12 please The energy level diagram for a hydrogen atom is shown. The following 000 ev questions are about the energy levels of the hydrogen atom. An0544 ev -1.51 ev 0.850 ev electron jumps from the n 5 level to the n 1 level. 1. Will this result in an emission line, or an absorption line in then-3 n 4 spectrum of this atom? 2. Which excited state did the electron start at? n-2 3.40 ev 2....

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT