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: In addition to tetrahedral, another common shape for AB4 molecules is square planar. All five atoms lie in the same plane, with the B atoms at the corners of a square and the A atom at the center of the square. Which shape in the figure below could lead to a square-planar shape upon removal of one or more atoms?

Problem

In addition to tetrahedral, another common shape for AB4 molecules is square planar. All five atoms lie in the same plane, with the B atoms at the corners of a square and the A atom at the center of the square. Which shape in the figure below could lead to a square-planar shape upon removal of one or more atoms?

Diagrams show the structure and angles of a few molecular organizations. 1- AB2 linear, 180 degrees. A central A atom is connected left and right to other atoms, forming a straight line. 2- AB3 trigonal planar. 120 degrees. A central A atom is connected left and right, both angled down, to B atoms. 3- AB4 tetrahedral 109.5 degrees. A central A atom is connected in four directions to B atoms, forming a pyramid shape. 5-  AB5 trigonal bipyramidal. 120 degrees (between horizontal atoms) and 90 degrees (between vertical atoms). A central A atom is connected horizontally to three B atoms, arranged in a trigonal planar shape, as well as above and below to two B atoms. 6- AB6 octahedral 90degrees. A central A atom is connected above and below to B atoms, as well as horizontally to four B atoms which form the corners of a diamond.