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

Solution: Stable and radioactive isotopes as a function of numbers of neutrons and protons in a nucleus.The stable nuclei (dark blue dots) define a region known as the belt of stability. Estimate the optimal number of neutrons for a nucleus containing 70 protons.

Solution: Stable and radioactive isotopes as a function of numbers of neutrons and protons in a nucleus.The stable nuclei (dark blue dots) define a region known as the belt of stability.Estimate the optimal num

Problem


A graph shows a plot of stable isotopes rising steadily within a band of stability. This band is above the linear increasing line representing a 1 to 1 proton to neutron ratio.


Stable and radioactive isotopes as a function of numbers of neutrons and protons in a nucleus.The stable nuclei (dark blue dots) define a region known as the belt of stability.


Estimate the optimal number of neutrons for a nucleus containing 70 protons.

Solution

We are asked to determine the optimal number of neutrons for a nucleus containing 70 protons.

An element can be represented as:


You can determine the identity of the element using its atomic number:

Atomic number (Z): 

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