Quantum Numbers

What does the angular momentum quantum number (l) represent?

• The energy level of the electron

• The shape of the orbital

• The size of the orbital

• The orientation of the orbital

What is the value of m_s for an electron with spin down?

• 1/2

• 0

• -1/2

• -1

How do you determine the number of orbitals in a given energy level (n)?

• n

• 2n

• n²

• n+1

For iron (Fe), what is the value of the angular momentum quantum number (l) for the outermost electron?

• 0 (s orbital)

• 1 (p orbital)

• 2 (d orbital)

• 3 (f orbital)

What is the principal quantum number (n)?

• A positive integer that indicates the main energy level of an electron in an atom.

• A negative integer that indicates the main energy level of an electron in an atom.

• A decimal number that indicates the main energy level of an electron in an atom.

• A letter that represents the main energy level of an electron in an atom.

What is the value of m_s for an electron with spin up?

• +1/2

• -1/2

• 0

• +1

What is the shape of a p orbital?

• A spherical shape

• A dumbbell shape

• A tetrahedral shape

• A linear shape

What are quantum numbers?

• Values that describe the energy levels, orbitals, and spin of electrons in an atom.

• Numbers that represent the mass of an atom.

• Measurements of the distance between electrons and the nucleus.

• Constants used in chemical reactions.

What is the maximum number of electrons that can occupy a single orbital?

• 1 electron

• 2 electrons

• 3 electrons

• 4 electrons

What is the significance of the quantum number m_l?

• m_l determines the orientation of the orbital in a magnetic field.

• m_l indicates the energy level of the electron.

• m_l defines the shape of the orbital.

• m_l specifies the spin direction of the electron.