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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the average atomic mass of chlorine from its isotopes: Cl-35 and Cl-37.
💡 Hint: Remember to convert the percentages into fractions!
Question 2
Easy
What defines an isotope?
💡 Hint: Think about what makes elements the same and what gives them different masses!
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 with isotopes Cl-35 and Cl-37?
- 35.06 u
- 35.45 u
- 37.12 u
💡 Hint: Use the weighted average approach!
Question 2
True or False: The first ionization energy of magnesium is lower than that of sodium.
- True
- False
💡 Hint: Think about the electron shielding effects!
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
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!
Question 2
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.
Challenge and get performance evaluation