Textbook Question
Write the Lewis symbols for the ions in each ionic compound. c. CaI2
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Ch.10 - Chemical Bonding I: The Lewis Model
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217
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Table of contents
- Ch.1 - Matter, Measurement & Problem Solving118
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds131
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions82
- Ch.6 - Gases114
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements90
- Ch.10 - Chemical Bonding I: The Lewis Model89
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials47
- Ch.14 - Solutions90
- Ch.15 - Chemical Kinetics115
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases136
- Ch.18 - Aqueous Ionic Equilibrium153
- Ch.19 - Free Energy & Thermodynamics93
- Ch.20 - Electrochemistry106
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry140
Chapter 10, Problem 40a,d
Write the Lewis symbols for the ions in each ionic compound. a. SrO d. RbF
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Identify the elements involved in the compound RbF: Rubidium (Rb) and Fluorine (F).
Determine the electron configuration of each element: Rb is in Group 1 with one valence electron, and F is in Group 17 with seven valence electrons.
Understand that Rb will lose one electron to achieve a stable electron configuration, forming Rb⁺, and F will gain one electron to achieve a stable electron configuration, forming F⁻.
Draw the Lewis symbol for Rb⁺: Since Rb loses its one valence electron, its Lewis symbol is Rb with a positive charge, Rb⁺.
Draw the Lewis symbol for F⁻: Since F gains one electron, its Lewis symbol is F with eight dots around it and a negative charge, F⁻.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Lewis Symbols
Lewis symbols, or Lewis dot structures, represent the valence electrons of an atom as dots around the element's symbol. This notation helps visualize how atoms bond and interact in chemical compounds. For ions, the Lewis symbol indicates the loss or gain of electrons, reflecting their charged state.
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Ionic Compounds
Ionic compounds are formed through the electrostatic attraction between positively charged ions (cations) and negatively charged ions (anions). In the case of RbF, rubidium (Rb) donates an electron to fluorine (F), resulting in Rb+ and F- ions. Understanding the formation of these ions is crucial for writing their Lewis symbols.
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Charge of Ions
The charge of an ion is determined by the number of electrons lost or gained compared to the neutral atom. Cations, like Rb+, have a positive charge due to the loss of one electron, while anions, like F-, have a negative charge from gaining an electron. This charge is essential for accurately representing the ions in Lewis symbols.
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Related Practice
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