Ch.10 - Molecular Shapes & Valence Bond TheoryWorksheetSee 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: Which of the following triatomic ions would you expect to be linear and which would you expect to be V shaped? For those V shaped, suggest approximate bond angles. (a) BrF2+(b) BrF2-(c) CN22-.

Solution: Which of the following triatomic ions would you expect to be linear and which would you expect to be V shaped? For those V shaped, suggest approximate bond angles. (a) BrF2+ ; (b) BrF2- ; (c) CN22-.

Problem

Which of the following triatomic ions would you expect to be linear and which would you expect to be V shaped? For those V shaped, suggest approximate bond angles. 

(a) BrF2+

(b) BrF2-

(c) CN22-.

Solution

We are being asked about the molecular geometry of the given compounds, particularly if any of them are linear and/or V-shaped. We are also asked to suggest an approximation of the bond angle for the V-shaped molecule. Aside from these shapes, other possible molecular shapes are:



To do so, we first need to draw a Lewis structure


For this, we need to do the following steps:

Step 1: Determine the central atom in this molecule.

Step 2: Calculate the total number of valence electrons present.

Step 3: Draw the Lewis structure for the molecule.

Step 4: Determine the shape of the molecule.


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