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# (I) How much energy is needed to ionize a hydrogen atom in the $n=2$ state?

## 3.4 $\mathrm{eV}$

Quantum Physics

Atomic Physics

### Discussion

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##### Christina K.

Rutgers, The State University of New Jersey

##### Andy C.

University of Michigan - Ann Arbor

LB
##### Marshall S.

University of Washington

### Video Transcript

to find out much energy is needed to wear a nice the hydrogen atom. A question to state Well, basically, Bobby one is to race the energy from you. You too to e infinity. We know that infinity is when energy is cost zero right, Because this is the reference point. This is where the that is so nice And it's who is he? Negative energy value, right? It's related by ah negative 13.60 fee. But by one over in squared. So you energy required toe on Isis You take tea. Final energy Manistee Initial energy. So you finally is zero My last initial which is negative 13.6 times one over to square. It gives us 3.4 TV.

National University of Singapore

#### Topics

Quantum Physics

Atomic Physics

##### Christina K.

Rutgers, The State University of New Jersey

##### Andy C.

University of Michigan - Ann Arbor

LB
##### Marshall S.

University of Washington