Ch.10 - Molecular Shapes & Valence Bond TheoryWorksheetSee all chapters
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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: Give the bond order and number of unpaired electrons in C2 molecule and N2 - ion.a. C2: bond order 2, 2 unpaired electrons; N2-: bond order 2.5, 1 unpaired electronb. C2: bond order 2, 0 unpaired electrons; N2-: bond order 2.5, 1 unpaired electron.c. C2: bond order 1, 2 unpaired electrons; N2- bond order 3.5, 1 unpaired electron.d. C2: bond order 2, 0 unpaired electrons; N2-: bond order 2.5, 0 unpaired electrons.e. C2: bond order 2, 1 unpaired electron; N2- bond order 2.5, 1 unpaired electron.

Problem

Give the bond order and number of unpaired electrons in C2 molecule and N2 - ion.

a. C2: bond order 2, 2 unpaired electrons; N2-: bond order 2.5, 1 unpaired electron

b. C2: bond order 2, 0 unpaired electrons; N2-: bond order 2.5, 1 unpaired electron.

c. C2: bond order 1, 2 unpaired electrons; N2- bond order 3.5, 1 unpaired electron.

d. C2: bond order 2, 0 unpaired electrons; N2-: bond order 2.5, 0 unpaired electrons.

e. C2: bond order 2, 1 unpaired electron; N2- bond order 2.5, 1 unpaired electron.

Solution

Construct the MO diagram of Cand N2- and determine the # of unpaired electrons and bond order

For this problem, we need to do the following:


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

Step 2: Draw the molecular orbital diagram.

Step 3: Calculate the bond order of the molecule/ion. Recall that the formula for bond order is:


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