Code letters for orbital quantum numbers (l):

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Presentation transcript:

Code letters for orbital quantum numbers (l): QUESTION: What is the value of the orbital quantum number for an electron in a 3p orbital? A. 0, B. 1, C. 2, D. 3 Code letters for orbital quantum numbers (l): l=0: s. l=1: p l=2: d l=3; f l=4; g Note; for a given principal quantum number (n), allowed values of orbital quantum number (l) are non-negative integers less than n. For n=3, allowed values of l are 0, 1, and 2 These correspond to 3s, 3p, and 3d orbitals. SCRIPT What is the value of the orbital quantum number for an electron in a 3p orbital? 0…1…2…or 3 PAUSE 2 SECONDS CLICK It is customary to use code letters for the orbital quantum number ell… The code letters are as follows…. Ess for ell equals zero Pee for ell equals one Dee for ell equals two Eff for ell equals three And Gee for ell equals four Therefore, for an electron in a 3p orbital, the orbital quantum number ell is equal to 1. PAUSE 2 seconds Note that for a given principal quantum number en, the allowed values of ell are the non-negative integers less than en…. For example… for n equals 3… the allowed values of ell are zero, one, and two. These correspond to three-ess,… HIGHLIGHT n=3 and 3 in 3s, 3p, and 3d (yellow) HIGHLIGHT 0 and s (light green) Three pee… HIGHLIGHT 1 and p (light purple) And three dee… HIGHLIGHT 2 and d (light blue) Note that there are no 3f orbitals, since the orbital quantum number ell cannot be equal to 3 if en is 3. END RECORDING

Video ID: 2-3-3 © 2008, Project VALUE (Video Assessment Library for Undergraduate Education), Department of Physical Sciences Nicholls State University Author: Glenn V. Lo Funded by Louisiana Board of Regents Contract No. LA-DL-SELECT-13-07/08