QUANTUM NUMBERS

The spin quantum number (ms) refers to

• Direction of electron spin

• Energy level the electron is in

• Sublevel or shape of the orbital the electron is in

• Orientation of orbitals around nucleus

The magnetic quantum number (ml) refers to

• Orientation of orbitals around nucleus

• Sublevel or shape of the orbital the electron is in

• Direction of electron spin

• Energy level the electron is in

The principal quantum number (n) refers to

• Sublevel or shape of the orbital the electron is in

• Direction of electron spin

• Energy level the electron is in

• Orientation of orbitals around nucleus

The angular quantum number (l) refers to

• Energy level the electron is in

• Sublevel or shape of the orbital the electron is in

• Direction of electron spin

• Orientation of orbitals around nucleus

Who said that only two electrons can be in one orbital; however, electrons cannot have the same set of four quantum numbers as two electrons in an orbital have opposite spins?

• Pauli

• Hund

• Aufbau

• Bohr

An electron in the 3rd energy level can have a principal quantum number of

• 1

• 2

• 3

• 4

In electron configuration of 4s², what is the value of angular momentum quantum number?

• 0

• 1

• 2

• 3

In electron configuration of 3p⁴, what is the value of the spin quantum number?

• 1/2

• +1/2

• -1/2

• 1

In electron configuration of 6d³, what is the value of magnetic quantum number?

• 0

• -1

• +3

• -2

In electron configuration of 7f¹⁰, what is the value of angular momentum quantum number?

• 0

• 1

• 2

• 3