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- Homework Statement
- The total energy of the electron in a hydrogen

atom is normally −13.6 eV.

Which one statement below, based on this

fact, is correct?

1. The work required to completely remove

the electron from the atom is 13.6 eV.

2. The electron is in a circular orbit with a

kinetic energy of 6.8 eV.

3. The electron has a potential energy of

−27.2 eV and a kinetic energy of +13.6 eV.

4. The kinetic energy of the electron in the

atom is +27.2 eV.

5. The potential energy of the electron in

the atom is −13.6 eV.

6. The electron stays at a “classical turning

point” such that the potential energy is +13.6

eV.

- Relevant Equations
- Potential plus kinetic equals total energy

**Homework Statement::**The total energy of the electron in a hydrogen

atom is normally −13.6 eV.

Which one statement below, based on this

fact, is correct?

1. The work required to completely remove

the electron from the atom is 13.6 eV.

2. The electron is in a circular orbit with a

kinetic energy of 6.8 eV.

3. The electron has a potential energy of

−27.2 eV and a kinetic energy of +13.6 eV.

4. The kinetic energy of the electron in the

atom is +27.2 eV.

5. The potential energy of the electron in

the atom is −13.6 eV.

6. The electron stays at a “classical turning

point” such that the potential energy is +13.6

eV.

**Homework Equations::**Potential plus kinetic equals total energy

I have attempted both 3 and 5, both wrong. It makes sense to me that for 3 it would add up to be -13.6, but for some reason, this is not the answer. Please help