# Schrodinger equation and hydrogen atom

## Homework Statement

Find the width L of a one-dimensional box for which n=5 level would correspond to the absolute value of the n=3 state of a hydrogen atom

## Homework Equations

am i suppose to use n2h2/8mL2 where n=5 to equate it to the n=3 state of the hydrogen atom? which is -13.6eV/32?

## The Attempt at a Solution

i am confuse. or am i suppose to be using some other equations? i don't really understand the question though. appreciate any help

## Answers and Replies

ehild
Homework Helper
You have to use these equations. Omit the signs, the absolute values have to be equal. m is the mass of the electron, and convert eV to joule.

ehild

ah i see.. thanks a lot!