-2
$\begingroup$

How many m values are there for the 4f sublevel? In high school so no fancy words please!

$\endgroup$

1 Answer 1

3
$\begingroup$

With no fancy words: The orbital angular momentum quantum number $ l $ is given by the letter you see there: f. Remember that we link this quantum number with integers in the following fashion:

  1. $ l = 0 $: sublevel s.
  2. $ l = 1 $: sublevel p.
  3. $ l = 2 $: sublevel d.
  4. $ l = 3 $: sublevel f. So we got it, $ l = 3 $.

How many orbitals we have? Well, we have $ 2l + 1 = 2\cdot 3+1 = 7 $. These seven orbitals are numbered from the value $ -l $ to $ l $, so you can list them in the following way:

$$ m = \{-3, -2, -1, 0, 1, 2 ,3 \} $$

Remember these $ m $ values are the magnetic quantum numbers. Sometimes you may find them with the symbol $ m_l $.

$\endgroup$
4
  • 1
    $\begingroup$ Huh, "orbital angular momentum quantum number" could be some "fancy words". You sure you wanted answer this thing in particular ;) $\endgroup$
    – Mithoron
    Mar 14, 2023 at 22:53
  • $\begingroup$ Everything is written in fancy words, except the names for $ l $ and $ m_l $... I didn't put those names! But that's how the OP will see them in the exam, for sure! $\endgroup$ Mar 14, 2023 at 22:58
  • 2
    $\begingroup$ I was being snarky about OP's question, not the answer. This looks like one that a mod could have already closed if he saw it. But, well, you can answer what you want... I just recommend being a bit more picky in the future ;) $\endgroup$
    – Mithoron
    Mar 14, 2023 at 23:11
  • $\begingroup$ I will, I am new to the site, but I just like to help. Thanks $\endgroup$ Mar 14, 2023 at 23:34

Not the answer you're looking for? Browse other questions tagged or ask your own question.