Quantum Numbers

Question 1

What are the 4 quantum numbers?

Answer 1

n, l , ml, ms

Question 2

n (the principle quantum #)

Answer 2

it is any integer; 1, 2, 3, 4. It tells us what shell the electron is in and how far it is from the nucleus

Question 3

Is an electron with n=4 or n=7 closer to the nucleus?

Answer 3

n=4

Question 4

l (the azimuthal quantum #)

Answer 4

tells us what kind of orbital (s, p, d, or f) the electron is in. This number can ONLY be 0, 1, 2, or 3 (s, p, d, or f)

Question 5

What type of orbitals does the numbering (0, 1, 2, or 3) of the l or azimuthal quantum # refer to?

Answer 5

0=s
1=p
2=d
3=f

Question 6

ml (the magnetic quantum #)

Answer 6

this number can be any integer from -l to +l, including zero. (talking about the l or azimuthal #). This # tells us which one of the p-orbitals, d-orbitals, or f-orbitals the electron is in

Question 7

each orbital can hold up to how many e-?

Answer 7

2

Question 8

ms (the spin quantum #)

Answer 8

Is equal to - or + 1/2. So for any two e- occupying the same orbital, one is assigned a +1/2 spin and the other a -1/2 spin.

Question 9

Can n=o? (primary quantum number)

Answer 9

no

Question 10

If l=2,can you have ml= -3?

Answer 10

no. only -2.-1,0,+1,+2

Question 11

D orbital row numbering is always minus ____?

Answer 11

minus 1. So even though the D block starts on row 4, it’d be numbered starting at 3d

Question 12

F orbital row numbering is always minus _____?

Answer 12

minus 2. Even though the F block starts on row 6, it’s be number as 4f