## Modern Physics Quiz Part II

An electron in a mercury atom that is changing from the a to the g level absorbs a photon with an energy of

- 2.48 eV
- 10.38 eV
- 7.90eV
- 12.86eV

An electron in a hydrogen atom drops from the n=3 energy level to the n=2 energy level. The energy of the emitted photon is

- 4.91eV
- 1.51eV
- 1.89eV
- 3.40eV

When an electron changes from a higher energy to a lower energy state within an atom, a quantum of energy is

- fused
- absorbed
- emitted
- fissioned

Which electron transition in the hydrogen atom results in the emission of a photon of greatest energy?

- n=3 to n=2
- n=2 to n=3
- n=4 to n=2
- n=2 to n=1

A photon having an energy of 15.5 electron volts is incident upon a hydrogen atom in the ground state. The photon may be absorbed by the atom and

- ionize the atom
- excite the atom to n=3
- excite the atom to n=2
- excite the atom to n=4

The absorption of a photon causes a hydrogen atom to change from the n=2 to the n=3 energy state. What is the energy of the absorbed photon?

- 3.4eV
- 4.9eV
- 1.9eV
- 10.2eV

What is the minimum amount of energy required to ionize a hydrogen atom in the n=2 state?

- 13.6eV
- 10.2eV
- 3.4eV
- 0eV