Practice - Practice Problems and Solutions
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Practice Questions
Test your understanding with targeted questions
Calculate the average atomic mass of chlorine from its isotopes: Cl-35 and Cl-37.
💡 Hint: Remember to convert the percentages into fractions!
What defines an isotope?
💡 Hint: Think about what makes elements the same and what gives them different masses!
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the average atomic mass of chlorine with isotopes Cl-35 and Cl-37?
💡 Hint: Use the weighted average approach!
True or False: The first ionization energy of magnesium is lower than that of sodium.
💡 Hint: Think about the electron shielding effects!
1 more question available
Challenge Problems
Push your limits with advanced challenges
If chlorine has 75.78% abundance of Cl-35 and 24.22% of Cl-37, calculate the average atomic mass.
💡 Hint: Remember to convert percentages into fractions!
Discuss the physical meaning of ionization energy and why it increases across a period. Provide examples from periodic trends.
💡 Hint: Think about how the number of protons affects attraction to electrons.
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