Summary of Quantum Numbers Principal quantum number, n: the main electron energy levels or shells (n) | Secondary quantum number, l: the electron sublevels or subshells; tells you orbital shape (0 to n-1) | Magnetic quantum number, ml : the orbital orientation of a sublevel (-l to +l) | Spin quantum number, ms : the electron spin (+1/2 or -1/2) | 1 | 0 | 0 | +1/2, -1/2 | 2 | 01 | 0-1,0,+1 | +1/2, -1/2+1/2, -1/2 | 3 | 012 | 0-1,0,+1-2,-1, 0, +1, +2 | +1/2, -1/2+1/2, -1/2+1/2, -1/2 |
Energy Level Diagrams:
Pauli exlusion principle: no two electrons in an atom can have the same four quantum numbers; no two electrons in the same atomic orbital can have the same spin
Aufbau principle: each electron is…show more content…
Example (p 220 #12): Write a complete ground-state electron configuration for each of the following atoms or ions (a) Mg (d) Rb
(b) S2- (e) Au
(c) K+
Example (p220 # 13): Write the shorthand electron configuration for each of the following atoms or ions (a) Yttrium
(b) Antimony
(c) Barium ion
Example (p220 #15): Identify the following atoms or ions from their electron configurations (a) W: 1s22s22p63s23p64s23d104p3
(b) X+: 1s22s22p63s23p64s23d104p6
(c) Y -: 1s22s22p63s23p64s23d104p65s24d105p6
(d) Z: 1s22s22p63s23p64s23d104p65s24d105p66s24f 11
Procedure for Drawing Lewis Structures: 1. Arrange atoms symmetrically around the central atoms (usually listen first in the formula, not usually oxygen and never hydrogen) 2. Count the number of valence electrons of all atoms 3. Place a bonding pair of electrons between the central atom and each of the surrounding atoms 4. Complete the octets o the surrounding atoms using lone pairs of electrons. Any remaining electrons go on the central atom 5. If the central atom does not have an octet, move lone pairs from the surrounding atoms to form double or triple bonds until the central atom has a complete octet 6. Draw the Lewis structure
Example: Draw a Lewis symbol for each of the following (a) CCl4 (b) PCl3 (c) H2O (d) NH3
Valence Bond Theory: *
Chemistry 12mr. B. Quast's Website Mount Douglas Secondary System
(b) S2- (e) Au (c) K+ Example (p220 # 13): Write the shorthand electron configuration for each of the following atoms or ions (a) Yttrium (b) Antimony (c) Barium ion Example (p220 #15): Identify the following atoms or ions from their electron configurations (a) W: 1s22s22p63s23p64s23d104p3 (b) X+: 1s22s22p63s23p64s23d104p6. CHEM 12B: Organic Chemistry Syllabus Updated: 4.6.19 3 This course is an upper level chemistry course that entails a lot of new vocabulary and concepts. This will not be the same as other courses you’ve taken. In particular, you are encouraged to form a study group with some peers to study together. Chemistry 30 is a twelfth-grade chemistry course for students in Alberta, Canada. This document is a final test for the course. Both English and French versions of the test are provided. Intended for administration during June 1986, it contains 56 multiple-choice questions and three written-response problems. Two-and-one-half hours are allowed for completing the test. Applying the equations to answer questions became very easy for me after practice. I manipulated the equations to solve for the variables I wanted to know which was really easy because of my past experiences with manipulating equations. In the end I showed good Understanding in. Manitoba Education Cataloguing in Publication Data Grade 12 chemistry electronic resource: a foundation for implementation ISBN: 978-0-7711-5285-6.
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