Understanding Quantum Numbers

What does the principal quantum number indicate?

• The main energy level of an electron

• The shape of the electron's orbit

• The orientation of the orbital in space

• The direction of the electron's spin

Which quantum number describes the shape of the electron's orbit?

• Principal quantum number

• Angular momentum quantum number

• Magnetic quantum number

• Spin quantum number

What is the range of the magnetic quantum number 'm' if the angular momentum quantum number 'l' is 2?

• -2 to +2

• 0 to 2

• 1 to 3

• -1 to +1

What does the spin quantum number indicate?

• The direction of the electron's spin

• The main energy level of an electron

• The shape of the electron's orbit

• The orientation of the orbital in space

What is the maximum value of the angular momentum quantum number 'l' if the principal quantum number 'n' is 3?

• 2

• 3

• 1

• 0

What 2 important aspects of electron's do quantum number tell us?