Quantum Numbers

Quantum Numbers

Objectives

At the end of the video lesson, you will...

1. answer questions about Quantum Numbers

2. Identify the four quantum numbers of a given Element.

Multiple Choice

What is the value of the principal quantum number (n) for the last valence electron of fluorine?

• 4

• 3

• 2

• 1

Multiple Choice

How many sublevels are there when n is 3?

• 1

• 2

• 3

• 4

Multiple Choice

What is the value of the magnetic quantum number (ml) for the 2p5 electron of fluorine?

• -1

• 0

• 1

• 2

Multiple Choice

What is the principal quantum number that represents the energy level of the electron?

• n

• l

• m sub l

• m sub s

Multiple Choice

What is the value of the spin quantum number (ms) for the 2p5 electron of fluorine?

• 1

• 1/2

• -1/2

• -1

Multiple Choice

Which sublevel has a spherical shape?

• d

• s

• p

• f

Multiple Choice

What is the value of the principal quantum number (n) for the last valence electron of iron?

• 5

• 2

• 3

• 4

Multiple Choice

Which quantum number describes the shape of the orbital?

• l

• n

• m sub l

• m sub s

Multiple Choice

What is the value of the magnetic quantum number (ml) for the 3d6 electron of iron?

• 1

• 0

• -1

• -2

Multiple Choice

How many electrons can the d sublevel hold?

• 14

• 10

• 6

• 2

Multiple Choice

What is the value of the spin quantum number (ms) for the 3d6 electron of iron?

• 1

• 1/2

• -1

• -1/2

Multiple Choice

What is the maximum number of electrons that can be accommodated in an s orbital?

• 2

• 1

• 3

• 4

Multiple Choice

What is the value of the principal quantum number (n) for the last valence electron of the 4f5 electron?

• 5

• 2

• 3

• 4

Multiple Choice

What is the maximum number of electrons that the f sublevel can hold?

• 2

• 6

• 10

• 14

Multiple Choice

What is the value of the magnetic quantum number (ml) for the 4f5 electron?

• -1

• -2

• 0

• 1

Multiple Choice

What is the Aufbau principle?

• Electrons in the same energy level must have the same spin values

• Electrons in the same orbital must have opposite spin values

• Electrons fill up orbitals according to their relative energies

• Electrons in the same energy level must have opposite spin values

Multiple Choice

What is the value of ml for the 3p5 electron?

• -1

• 0

• 1

• 2

Multiple Choice

What is the electron configuration of a neutral chlorine atom?

• 1s2 2s2 2p6 3s2 3p5

• 1s2 2s2 2p6 3s2 3p4

• 1s2 2s2 2p6 3s2 3p3

• 1s2 2s2 2p6 3s2 3p6

Multiple Choice

How many s electrons are in the electron configuration for phosphorus?

• 6

• 9

• 2

• 15

Multiple Choice

What is the term for atoms with unpaired electrons in their orbital diagrams?

• Paramagnetic

• Anisotropic

• Isotopic

• Diamagnetic

Multiple Choice

What is the electron configuration for phosphorus?

• 1s2 2s2 2p6 3s2 3p3

• 1s2 2s2 2p6 3s2 3p6

• 1s2 2s2 2p6 3s2 3p4

• 1s2 2s2 2p6 3s2 3p5

Multiple Choice

What does the magnetic quantum number m sub l determine?

• Energy level of the electron

• Shape of the orbital

• Specific orbital amongst a set

• Spin of the electron

Multiple Choice

According to Hund's rule, how are degenerate orbitals filled?

• Two at a time

• One at a time

• Three at a time

• All at once

Multiple Choice

What is the spin quantum number m sub s for every electron in an atom?

• 1/2 or -1/2

• 2

• 0

• 1