Question

The unit of an universal constant is cm\(^{-1}\). What is the constant?

• A. Planck's constant
• B. Boltzmann constant
• C. Rydberg constant
• D. Avogadro constant
• E. Molar gas constant

Hint:

The Rydberg constant has units of cm\(^{-1}\) and is used in the context of atomic spectra.

Answer 1

The Correct Option is C

The Rydberg constant is a fundamental physical constant related to the hydrogen atom's energy levels. The Rydberg constant has units of \( \text{cm}^{-1} \), and it is used to describe the wavelengths of spectral lines of hydrogen.

Thus, the constant that has units of \( \text{cm}^{-1} \) is the Rydberg constant.

Thus, the correct answer is: \( \boxed{\text{Rydberg constant}} \).