Question

1. The energy of the electron in the lowest level of the hydrogen atom (n=1) is -2.179×10-18 J.

What is the energy of the electron in level n=5?

-8.716×10-20 J (Answer is correct)

2. The electron in a hydrogen atom moves from level n=4 to level n=1.

Is a photon emitted or absorbed?

What is the wavelength of the photon?

3. An excited hydrogen atom emits a photon with a wavelength of 102.6 nm.

In what region of the spectrum is this photon?

visible-red

visible-orange

visible-yellow

visible-green

visible-blue

visible-violet

ultraviolet

infrared

What is the frequency of this photon?

4. A hydrogen atom in the ground state absorbs a photon of wavelength 95.0 nm.

2 3 4 5 6 What energy level does the electron reach?

5. This excited atom then emits a photon of wavelength 1282.0 nm.

2 3 4 5 6What energy level does the electron fall to?

Answer 1