Which Has More Energy in Molecules: Rotational or Vibrational States?

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SUMMARY

The discussion centers on the energy comparison between rotational and vibrational states in molecules, specifically focusing on the HCl molecule. The consensus is that the rotational energy is greater than the vibrational energy in the first states of these modes. The initial calculations presented by the user confirmed that vibrational energy is significantly lower than rotational energy, which aligns with established molecular physics principles.

PREREQUISITES
  • Understanding of molecular energy states
  • Familiarity with rotational and vibrational energy calculations
  • Knowledge of HCl molecular structure
  • Basic principles of quantum mechanics
NEXT STEPS
  • Research the mathematical formulas for calculating rotational and vibrational energy in diatomic molecules
  • Study the implications of rotational and vibrational states on molecular spectroscopy
  • Explore the differences in energy levels between various diatomic molecules
  • Learn about quantum harmonic oscillators and their relation to vibrational states
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This discussion is beneficial for chemistry students, molecular physicists, and researchers interested in molecular energy states and their implications in spectroscopy and quantum mechanics.

Chronothread
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I apologize for disregarding the template, but it did not seem necessary or practical for my question.

In molecules which has more energy, a rotational or vibrational state (first state for both)? I've just calculated the vibrational and rotational energy of an HCl molecule and my results show that the vibrational energy is dramatically less then the rotational energy. From previous knowledge I thought the vibrational energy would be more.

Thank you for your time.
 
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what is your question?

And how did you calculated it?

As far as I remember, the rot energy is larger than vib energy in molecules.
 
Ok, I did a little more work and I think you're right. Which means that my first calculations were correct then. Thanks.
 

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