# Rydberg Equation Calculator

Enter the atomic number and principal quantum numbers of the initial and final state of an emitted light to calculate the wavelength using the Rydberg equation.

## Rydber Equation Formula

The following formula is used by the calculator to calculate the wavelength of an emitted light.

W = 1 / [R*Z^2*(1/nf^2 – 1/ni^2)]

• Where W is the wavelength
• R is the rydberg constant ( 1.097 * 10^7 m^-1 )
• Z is the number of protons in the nucleus of the element
• nf is the principal quantum number in the final state
• ni is the principal quantum number in the initial state

How to calculate wavelength with the Rydberg equation

1. First, determine the number of protons in the nucleus of the element

The element will need to be either hydrogen or hydrogen like.

2. Next, determine the principal quantum numbers of the element

This will be the numbers of the element in it’s initial and final state after having gone a change in energy levels.

3. Finally, calculate the wavelength of the light

Calculate the wavelength of the light emitted from the change in energy levels of the element.

## FAQ

What is the rydberg equation?

The rydber equation is a formula used to calculate the wavelength of light that is emitted when hydrogen like elements are switching to different energy levels.

How do you calculate the rydberg equation?

It’s not so much that you calculate the rydberg equation, but rather you calculate the wavelength from the formula. Use the calculator above or formula to calculate the wavelength,.