Wave Number Formula:
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Definition: The wave number represents the spatial frequency of a wave in hydrogen's line spectrum, measured in reciprocal meters (m-1).
Purpose: This calculator determines the wave number of spectral lines in hydrogen's emission spectrum using the Rydberg formula.
The calculator uses the Rydberg formula:
Where:
Explanation: The formula calculates the difference in energy between two quantum states of a hydrogen atom.
Details: Wave numbers are fundamental in spectroscopy for identifying elements and studying atomic structure.
Tips: Enter the principal quantum numbers (n1 must be less than n2). Common series:
Q1: What is the Rydberg constant?
A: The Rydberg constant (10973731.6 m-1) is a physical constant relating to atomic spectra.
Q2: Why must n2 be greater than n1?
A: This ensures the electron transitions to a higher energy level, emitting a photon.
Q3: How does this relate to wavelength?
A: Wavelength (λ) = 1/wave number (ν'). The calculator gives ν' directly.
Q4: What are typical values for n1 and n2?
A: For visible spectrum (Balmer series), n1=2, n2=3-7.
Q5: Can this be used for other elements?
A: The formula is specific to hydrogen-like atoms. Other elements require modifications.