Problem: Does the hydrogen atom "expand" or "contract" when an electron is excited from the n = 1 state to the n = 4 state?

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We’re asked to determine if the hydrogen atom will "expand" or "contract" when an electron is excited from the n = 1 state to the n = 4 state.


Recall that the atomic radius is the distance between the nucleus and its outermost electron orbital.  


Hydrogen, H has an atomic number =1, so, it only has 1 electron.  


Since a higher energy orbital has a larger radius than a lower energy orbital.  This means that: 


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Problem Details

Does the hydrogen atom "expand" or "contract" when an electron is excited from the n = 1 state to the n = 4 state?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Bohr Model concept. You can view video lessons to learn Bohr Model. Or if you need more Bohr Model practice, you can also practice Bohr Model practice problems.

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