Ch.2 - Atoms & ElementsWorksheetSee 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: Argon has three naturally occurring isotopes, 36Ar, 38Ar, and 40Ar. What is the mass number of each isotope? How many protons, neutrons, and electrons are present in each?

Solution: Argon has three naturally occurring isotopes, 36Ar, 38Ar, and 40Ar. What is the mass number of each isotope? How many protons, neutrons, and electrons are present in each?

Problem

Argon has three naturally occurring isotopes, 36Ar, 38Ar, and 40Ar. What is the mass number of each isotope? How many protons, neutrons, and electrons are present in each?


Solution

Isotopes are elements with the same number of protons, but different number of neutrons.

We are going to use the notation below to solve for the required information. 

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