Ch.9 - Bonding & Molecular StructureWorksheetSee 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
Sections
Lewis Dot Symbols
Chemical Bonds
Dipole Moment
Octet Rule
Formal Charge
Lewis Dot Structures: Neutral Compounds
Lewis Dot Structures: Sigma & Pi Bonds
Lewis Dot Structures: Ions
Lewis Dot Structures: Exceptions
Lewis Dot Structures: Acids
Resonance Structures
Average Bond Order
Bond Energy
Coulomb's Law
Lattice Energy
Born Haber Cycle
Additional Practice
Lewis Dot Structure: Formal Charge

Formal Charge is the charge given to an element within a molecule when assuming equal sharing of electrons between bonded elements. 

Formal Charge

Example #1: Determine the formal charge of the nitrogen atom found within the ammonia molecule, NH3.

Practice: Calculate the formal charges for each of the oxygen atoms within the nitrite ion, NO2.

Practice: Calculate the formal charge of the carbon atom within a carbon monoxide molecule.

a) –1

b) +2

c) 0

d) +

e) –2

Practice: Based on calculated formal charges, determine the overall charge (net charge) for the following compound.

a) –3

b) +4

c) +1

d) –1

e) +2

Practice: Which element within the thiocyanate ion possesses a negative charge?

a) C

b) S

c) N

d) All of them

e) None of them