quantum theory

Multiple Select

Which of the following are true about atomic emission spectra?

• The color of light depends on how far the electron falls.

• A big drop in energy level results in violet light.

• A small drop in energy level results in red light.

• Electrons absorb energy and fall to a lower orbit.

Multiple Choice

Which of the following statements best describes the photoelectric effect?

• Electrons are emitted from a metal surface when light of a certain frequency shines on it.

• Electrons move in fixed orbits around the nucleus.

• Atoms emit light only when heated to high temperatures.

• Electrons can exist anywhere around the nucleus.

Multiple Choice

Why is the quantum mechanical model of the atom significant in understanding atomic structure?

• The quantum mechanical model simplifies atomic structure by eliminating the need for wave functions.
• It suggests that electrons have fixed orbits around the nucleus.
• The model is primarily based on classical physics principles.
• The quantum mechanical model provides a more accurate and comprehensive understanding of atomic structure by describing electron behavior in terms of probabilities and wave functions.

Multiple Choice

According to Bohr's model, what happens when an electron in a hydrogen atom absorbs energy?

• It jumps to a higher energy orbit.

• It emits a photon and falls to a lower orbit.

• It becomes a proton.

• It leaves the atom completely.

Multiple Choice

The principal quantum number (n) determines the ___ of an electron in an atom.

• energy
• location

• spin

• angle