Quantum Mechanics Quiz

What did the dual wave-particle model of light fail to explain about atomic emission spectra?

• Why they are continuous

• Why they are discontinuous

• Why they are colorful

• Why they are invisible

Tags

NGSS.HS-PS4-3

What is the lowest allowable energy state of an atom called?

• Excited state

• Neutral state

• Ground state

• Base state

What happens to an atom when it gains energy?

• It becomes neutral

• It is in an excited state

• It loses electrons

• It becomes a solid

Tags

NGSS.HS-PS1-2

According to Bohr's model, how does an electron in a hydrogen atom move around the nucleus?

• In random paths

• In only certain allowed circular orbits

• In a straight line

• In elliptical orbits

What is the number assigned to each orbit of an electron called?

• Atomic number

• Mass number

• Quantum number

• Orbital number

In Bohr's model of the atom, what is the ground state of a hydrogen atom?

• n = 1

• n = 2

• n = 3

• n = 4

What happens to the electron in a hydrogen atom when energy is added, according to Bohr's model?

• It moves to a lower-energy orbit.

• It moves to a higher-energy orbit.

• It stays in the same orbit.

• It leaves the atom.

What was one limitation of Bohr's model of the atom?

• It could only explain hydrogen's spectral lines.

• It accurately described all elements' spectral lines.

• It showed electrons moving in elliptical orbits.

• It provided a complete understanding of electron behavior.

According to the text, what does substantial evidence suggest about electron movement?

• Electrons move in circular orbits around the nucleus.

• Electrons do not move in circular orbits around the nucleus.

• Electrons move in straight lines around the nucleus.

• Electrons are stationary around the nucleus.

What does the quantum number 'n' represent?

• Shape

• Size

• Orientation

• Spin