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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the atomic number of oxygen?
💡 Hint: Look up the position of oxygen on the periodic table.
Question 2
Easy
How do you calculate the mass number?
💡 Hint: Think of the formula A = Z + N.
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 does atomic number represent?
- Number of protons
- Number of neutrons
- Total atomic mass
💡 Hint: Reflect on how elements are identified.
Question 2
True or False: The mass number is the sum of protons and electrons.
- True
- False
💡 Hint: Consider what the mass number indicates.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A particular element has an atomic number of 15 and a mass number of 31. How many neutrons does it have?
💡 Hint: Use the formula for mass number.
Question 2
If an element has a mass number of 40 and contains 18 neutrons, what is its atomic number?
💡 Hint: Subtract the neutrons from the mass number.
Challenge and get performance evaluation