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: Will H21+ be more or less stable than H 2, and why?1. more stable; H21+ has one more electron in bonding orbitals2. less stable; H21+ has one less electron in antibonding orbitals3. less stable; H21+

Solution: Will H21+ be more or less stable than H 2, and why?1. more stable; H21+ has one more electron in bonding orbitals2. less stable; H21+ has one less electron in antibonding orbitals3. less stable; H21+

Problem

Will H21+ be more or less stable than H 2, and why?

1. more stable; H21+ has one more electron in bonding orbitals
2. less stable; H21+ has one less electron in antibonding orbitals
3. less stable; H21+ has one less electron in bonding orbitals
4. more stable; H21+ has one less electron in antibonding orbitals
5. less stable; H21+ has one more electron in antibonding orbitals

Solution

We’re being asked if H2+1 will be more or less stable than H2


We need to look at the molecular orbital (MO) diagram for each molecule; to do so:


Step 1: Calculate the total number of valence electrons present.

Step 2: Draw the molecular orbital diagram.


Recall that the bonding MOs are those without an asterisk (e.g., σ1s), while the antibonding MOs are those with an asterisk (e.g., σ1s*).


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