What is the principal quantum number (n) for the valence electron of potassium?

• 3

• 2

• 5

• 4

In the context of quantum numbers, what does the 'S block' indicate about the azimuthal quantum number (l)?

• l = 1

• l = 0

• l = 3

• l = 2

Which of the following is a possible value for the magnetic quantum number (ml) when l is 0?

• -1

• 2

• 0

• 1

What is the spin quantum number (ms) for the first electron in the S block of potassium?

• 0

• -1/2

• -1

• +1/2

How many electrons can the second shell hold according to the electron configuration diagram?

• 6

• 8

• 4

• 2