5-3 Quantum Numbers

What is the purpose of quantum numbers according to the text?

• To determine the color of an atom

• To identify the weight of an atom

• To describe the properties and location of electrons

• To measure the temperature of an atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What do quantum numbers ensure about electrons in an atom?

• They are all the same

• They occupy a distinct space

• They are invisible

• They are weightless

Which quantum number is related to the orientation of the electron spin?

• Principal

• Azimuthal

• Magnetic

• Spin

What does the Spin Quantum Number describe?

• Distance of the electrons from the nucleus

• Shape of the orbital

• Orientation of the orbital

• Orientation of the electron spin

How is the principal quantum number (n) similar to seating in a stadium?

• It determines the price of the seat

• It indicates how far you are from the field

• It shows the color of the seat

• It is unrelated to seating

Tags

NGSS.HS-PS1-1

What does the principal quantum number (n) correlate with on the periodic table?

• The element's color

• The element's row number

• The element's column number

• The element's mass

Tags

NGSS.HS-PS1-1

What is the range of possible values for the angular momentum quantum number (l)?

• 0 to n

• 0 to n+1

• 0 to n-1

• 1 to n-1

What type of orbital corresponds to l=2?

• s orbital

• p orbital

• d orbital

• f orbital

What are the possible values for the spin quantum number (mₛ)?

• 0, +1

• +1/2, -1/2

• -1, 0, +1

• +1, -1

Answer explanation

The spin quantum number (mₛ) can only take values of +1/2 and -1/2, representing the two possible orientations of a spin-1/2 particle. Other options do not correspond to valid spin quantum numbers.

What is the key point about the magnetic quantum number?

• It determines the size of the orbital

• It determines the shape of the orbital

• It determines how the orbital is oriented in space

• It determines the energy level of the orbital

Answer explanation

The magnetic quantum number (m) specifies the orientation of an orbital in space. It indicates the direction in which the orbital is aligned, distinguishing between different orbitals of the same shape and energy.