Ch.19 - Nuclear ChemistryWorksheetSee 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

The Valley or Band of Stability represents the area where stable, non-radioactive isotopes exist based on their ratio of neutrons to protons. 

Valley of Stability 

Whenever the difference between neutrons to protons within a nucleus is significant enough an isotope is radioactive. 

Concept #1: The central idea of nuclear chemistry is that unstable nuclei will give off radiation. 

Neutrons act like the glue that keeps the nucleus together. The more neutrons present then the greater the attractive strong force, while the more protons then the greater the repulsive Coulombic force

Concept #2: Non-radioactive isotopes with the optimum number of neutrons to protons will lie within the Valley of Stability, while radioactive isotopes will lie outside of it. 

Example #1: Determine if the following nuclide will undergo alpha decay, beta decay or positron emission.

Hydrogen-3                                                                              

 

Example #2: Determine if the following nuclides will undergo alpha decay, beta decay or positron emission.

Radon-222

Example #3: Determine if the following nuclides will undergo alpha decay, beta decay or positron emission.

Magnesium-50