Ch.8 - Periodic Properties of the ElementsWorksheetSee all chapters
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Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Which of the following set of quantum numbers are NOT allowed? Choose all that apply.a. n = 3, l = 2, m_l = -1 and m_s = +1/2 b. n = 5, l = 4, m_l = 3 and m_s = + 1/2 c. n = 4, l = 4, m_l = -4 and m_s

Problem

Which of the following set of quantum numbers are NOT allowed? Choose all that apply.

a. n = 3, l = 2, m_l = -1 and m_s = +1/2 

b. n = 5, l = 4, m_l = 3 and m_s = + 1/2 

c. n = 4, l = 4, m_l = -4 and m_s = 1/2 

d. n = 4, l = 2, m_l = 3 and m_s = 1/2


Solution

The things you have to remember in answering this type of question is that l =n-1 or less, ml = +/- l or less and ms is just +/- 1/2.

From that,
 c. n = 4, l = 4, m_l = -4 and m_s = 1/2
 violates the rule that l should be at most 1 less than n. For n=4, maximum l =3.

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