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: This question has multiple parts. Work all the parts to get the most points.Strontium has four isotopes. Strontium-84 has a very low natural abundance but  86Sr, 88Sr, and 88Sr are all reasonably abun

Problem

This question has multiple parts. Work all the parts to get the most points.

Strontium has four isotopes. Strontium-84 has a very low natural abundance but  86Sr, 88Sr, and 88Sr are all reasonably abundant. Knowing the atomic weight of strontium is 87.62, which of the more abundant isotopes predominates? 

Chlorine has two isotopes. Both 35Cl and 37Cl are reasonably abundant. Knowing the atomic weight of chlorine is 35.45, which of the isotopes predominates? 

Boron has two isotopes. Both 10B and 11B are reasonably abundant. Knowing the atomic weight of boron is 10.81, which of the isotopes predommates?