# Physics

posted by .

What wavelength photon would be required to ionize a hydrogen atom in the ground state and give the ejected electron a kinetic energy of 13.1 eV?

I tried ryhdberg's equation and E=hf. Need help.

Thanks

• Physics -

The ground state of a hydrogen atom is 13.6 eV below the ionization threshold. If the free electron is to have 13.1 eV of kinetic energy, the total energy needed is 26.7 eV. Convert that to photon energy E in Joules using 1.6*10^-19 J per eV. Then use the Planck relationship
E = h c/L, where L is the wavelength in meters and h is Planck's constant, to solve for L.

## Similar Questions

1. ### chem

How much energy is required to ionize a hydrogen atom in its ground (or lowest energy) state?
2. ### Chemistry

Ionization energy is defined as the minimum energy required to remove an electron from the ground state (n0) to infinity (n∞). Determine the wavelength of radiation required to ionize the hydrogen electron from the n = 2 energy …
3. ### physics

Hydrogen atom is initially in the ground state. It is excited by a photon bombardment and it then undergoes a transition from n = 3 to n=2 state. a) What is the frequency of the bombarding photon?
4. ### science

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of . Determine the frequency (in hz) of the interacting photon.
5. ### chemistry

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 5.908×10−10 m. Determine the frequency (in hz) of the interacting …
6. ### Science

I have a question from an old exam that I need help to understand, i'm not sure where to start An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a …
7. ### science

I have a question from an old exam that I need help to understand, i'm not sure where to start An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a …
8. ### Math (Physics)

Problem: What wavelength photon would be required to ionize a hydrogen atom in the ground state and give the ejected electron a kinetic energy of 19.1 eV ?
9. ### 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 …
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