Ch.8 - Periodic Properties of the ElementsWorksheetSee all chapters
All Chapters
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: Part A: Calculate Zeff for a valence electron in an oxygen atom.Part B: Calculate Zeff for the 4s electron in a copper atom, Cu.Part C: Calculate Zeff for a 3d electron in a copper atom, Cu.

Problem

Part A: Calculate Zeff for a valence electron in an oxygen atom.

Part B: Calculate Zeff for the 4s electron in a copper atom, Cu.

Part C: Calculate Zeff for a 3d electron in a copper atom, Cu.

Solution

Part A:

We’re being asked to calculate the effective nuclear charge (Zeff) of the valence electron in oxygen (O) atom. Recall that the effective nuclear charge is the forces exerted by the nucleus onto an electron and is given by:



where Z = nuclear charge or atomic number and S = shielding constant. For this problem, we need to do the following steps:

Step 1: Determine the atomic number.

Step 2: Determine the electron configuration and group them by n-values.

Step 3: Calculate for the shielding constant.

Step 4: Calculate for Zeff.


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