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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is an isotope?
💡 Hint: Think about the definition relating to atomic structure.
Question 2
Easy
If chlorine-35 is 75.78% abundant, what is its decimal representation?
💡 Hint: Convert percentage to decimal form by dividing by 100.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the average atomic mass of chlorine based on its isotopes?
- 34.96
- 35.45
- 36.01
💡 Hint: Look closely at the percentages given.
Question 2
Isotopes of an element must have the same number of protons?
- True
- False
💡 Hint: Think about what defines an element.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If an unknown element has two isotopes with masses of 50 u and 52 u, and abundances of 75% and 25% respectively, calculate the average atomic mass.
💡 Hint: Apply the same method as we did with chlorine.
Question 2
Explain how the average atomic mass might differ if the abundances of chlorine-35 and chlorine-37 were reversed.
💡 Hint: Think about how weighting works in averages.
Challenge and get performance evaluation