Difference in atomic energies 2p 1s for hygrogen and duterium

In summary, the problem asks for the difference in wavelength between the 2p→1s line in ordinary hydrogen and in deuterium. To calculate this, we can use the relationship c=(Δλ) (Δf) and Δf =hbar/ΔE, where ΔE represents the difference in energies between the 2p and 1s states. The primary difference between ordinary hydrogen and deuterium is the reduced mass, which affects the energy levels. 2p corresponds to n=2 and 1s corresponds to n=1.
  • #1
helpcometk
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Homework Statement


Calculate the difference in
wavelength between the 2p→1s line in ordinary hydrogen and in deuterium (which has a nucleus containing
a proton and a neutron).

Homework Equations



the difference in wavelength is related with the difference in frequences with the relationship :
c=(Δλ) (Δf) but Δf =hbar/ΔE so Δλ= c ΔΕ / hbar ,so what's the difference in energies between 2p and 1s ?

The Attempt at a Solution

 
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  • #2
helpcometk said:

Homework Statement


Calculate the difference in
wavelength between the 2p→1s line in ordinary hydrogen and in deuterium (which has a nucleus containing
a proton and a neutron).

Homework Equations



the difference in wavelength is related with the difference in frequences with the relationship :
c=(Δλ) (Δf) but Δf =hbar/ΔE so Δλ= c ΔΕ / hbar ,so what's the difference in energies between 2p and 1s ?

The Attempt at a Solution

c = (Δλ) (Δf) can't be right. If Δf = 0, you'd have Δλ = 0, and c clearly doesn't equal 0.

Think about why the energies would be different in the two atoms. What's the primary difference between ordinary hydrogen and deuterium? Why would this affect the energy levels? Think about the assumptions that went into deriving the formula for the energy of a state.
 
  • #3
That was the first part of the formal question actually and I've hidden it becuase in knew the answer, there is reduced mass differnce between deuterium and Hydrogen.
But what can't understand is the difference between 2p and 1s in an individual atom
 
  • #4
Hmm, I have to admit I'm confused at to what exactly you're getting stuck on. Can you be more specific?
 
  • #5
Is 2p state correspondin to n=2 and 1s to n=1 ?
 
  • #6
Yes.
 
  • #7
Thanks
 

FAQ: Difference in atomic energies 2p 1s for hygrogen and duterium

What is the difference in atomic energies between 2p and 1s orbitals for hydrogen and deuterium?

The difference in atomic energies between 2p and 1s orbitals for hydrogen and deuterium is due to the difference in mass between the two isotopes. Deuterium has an additional neutron, which increases its atomic mass and results in a slightly higher energy level for its 2p orbital compared to hydrogen's 2p orbital.

Why is there a difference in atomic energies between 2p and 1s orbitals for hydrogen and deuterium?

The difference in atomic energies between 2p and 1s orbitals for hydrogen and deuterium is a result of the different nuclear charge experienced by the electrons in each isotope. Deuterium's additional neutron results in a stronger nuclear charge, which in turn affects the energy levels of its electrons.

How does the difference in atomic energies between 2p and 1s orbitals affect the behavior of hydrogen and deuterium?

The difference in atomic energies between 2p and 1s orbitals can affect the chemical and physical properties of hydrogen and deuterium. For example, deuterium has a slightly higher ionization energy and bond dissociation energy compared to hydrogen, which can impact its reactivity and stability in chemical reactions.

Can the difference in atomic energies between 2p and 1s orbitals be measured experimentally?

Yes, the difference in atomic energies between 2p and 1s orbitals for hydrogen and deuterium can be measured using various spectroscopic techniques. These methods involve bombarding the atoms with energy, causing them to emit light at specific wavelengths, which can then be analyzed to determine the energy levels of the electrons.

What other factors besides mass and nuclear charge may contribute to the difference in atomic energies between 2p and 1s orbitals for hydrogen and deuterium?

Other factors that may contribute to the difference in atomic energies between 2p and 1s orbitals include electron-electron repulsion and the effects of quantum mechanics. These factors can affect the shape and size of the orbitals and their energies, leading to small variations between isotopes.

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