## Question 1.19 Help

Hussein Saleh 1L
Posts: 32
Joined: Tue Feb 20, 2018 3:01 am

### Question 1.19 Help

Hello, I'm having trouble understanding how to go about these two parts of question 2.19:

(b) How many values of ml are allowed
for an electron in a 6d-subshell? (c) How many values of ml
are allowed for an electron in a 3p-subshell?

The answer key says the answers are (b):5 and (c):3. Anyone care to explain how to reach this conclusion.

Thanks!
Edit: I figured that I have a typo in the title. It's supposed to be 2.19 not 1.19
Last edited by Hussein Saleh 1L on Thu May 03, 2018 6:13 pm, edited 1 time in total.

Marisol Sanchez - 1E
Posts: 38
Joined: Fri Apr 06, 2018 11:05 am

### Re: Question 1.19 Help

For this problem you just need to look at the value of (l) since (ml) is dependent on (l). The value of (l) is given by the letter s,p,d, or f. They each correspond to 0,1,2,3 respectively if you remember from the notes. For b) if the value of (l) is 2, then based on the rules given by Lavelle, (ml) can be (-2,-1,0,1,2) which are 5 total. For c) the value of (l) is 1, so (ml) can be (-1,0,1) which is three total. In this case, the first number does not really matter because we are only asked about (ml) which is only based on (l). If you need further clarification please ask!

Patience Olsen 1A
Posts: 28
Joined: Fri Apr 06, 2018 11:04 am

### Re: Question 1.19 Help

You can also use the formula for the number of electrons that can occupy a subshell: ml=2l+1
For (b), you would plug in l=2 to get ml=5 and for (c), you would plug in l=1 to get ml=3.