Quantum Mechanics and the Atom Quiz

What is the relationship between the position and velocity of an electron?

• They are unrelated.

• They are complementary properties.

• They are directly proportional.

• They are inversely proportional.

What does the Hamiltonian operator in the Schrödinger equation represent?

• The position of the electron.

• The total energy of the electron.

• The velocity of the electron.

• The mass of the electron.

Which quantum number specifies the size and energy of an orbital?

• Angular momentum quantum number

• Spin quantum number

• Magnetic quantum number

• Principal quantum number

What is the relationship between energy and stability of an electron in an atom?

• Lower energy means more stability.

• Stability is independent of energy.

• Higher energy means more stability.

• Energy does not affect stability.

What is the principal quantum number n used to specify?

• The spin of the electron

• The size and energy of the orbital

• The shape of the orbital

• The orientation of the orbital

What is the possible range of values for the angular momentum quantum number L if the principal quantum number n is 3?

• 0 to 3

• 0 to 2

• 1 to 3

• 1 to 2

How many 3d orbitals are there when L equals 2?

• Seven

• Five

• Nine

• Three

What is the significance of the magnetic quantum number M sub L?

• It specifies the size of the orbital.

• It specifies the shape of the orbital.

• It specifies the orientation of the orbital.

• It specifies the energy of the orbital.

What is the shape of an orbital determined by?

• Principal quantum number

• Spin quantum number

• Magnetic quantum number

• Angular momentum quantum number

If n equals 4, what are the possible values for the angular momentum quantum number L?

• 1, 2, 3, 4

• 0, 1, 2, 3

• 0, 1, 2

• 1, 2, 3