Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Intro Physics Homework Help
Advanced Physics Homework Help
Precalculus Homework Help
Calculus Homework Help
Bio/Chem Homework Help
Engineering Homework Help
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Homework Help
Biology and Chemistry Homework Help
Quantum Numbers and Valence Electrons
Reply to thread
Message
[QUOTE="Qube, post: 4546545, member: 330425"] [h2]Homework Statement [/h2] 1) Apparently it's a true statement that the quantum numbers 2, 0, 0, 1/2 can apply to any of Cl's electrons. But chlorine's electron configuration is [Ne]3s^2 3p^5. What happened to the n = 3 electrons? 2) How many valence electrons can a ground state oxygen atom have with the quantum numbers m_l = 0 and m_s = +1/2? Those are the m-sub-l (magnetic) and spin quantum numbers, respectively. [h2]Homework Equations[/h2] For l = 0, m_l can only = 0. For l = 1, m_l can equal -1, 0, or 1. l = 0 corresponds with subshell s l = 1 corresponds with p. [h2]The Attempt at a Solution[/h2] For the first question, I'm thinking the question is only considering "core" electrons without explicitly stating it as such. Second question: oxygen has 6 valence electrons. 2 are in its 2s subshell. Four are in its 2p subshell. Exactly half the electrons of each subshell have a spin of +1/2. The other two electrons have opposing spins. The question only specifies that m_l = 0. That means l = 0 or 1. Both the s and p subshells must be considered. In that case there are 4 electrons that fulfill the criteria of having m_l = 0 and a spin of +1/2. One electron from the s subshell, and 3 from the p subshell. The key says 2, however. [/QUOTE]
Insert quotes…
Post reply
Forums
Homework Help
Biology and Chemistry Homework Help
Quantum Numbers and Valence Electrons
Back
Top