Practice - Atomic Number and Mass Number
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Practice Questions
Test your understanding with targeted questions
What is the atomic number of oxygen?
💡 Hint: Look up the position of oxygen on the periodic table.
How do you calculate the mass number?
💡 Hint: Think of the formula A = Z + N.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does atomic number represent?
💡 Hint: Reflect on how elements are identified.
True or False: The mass number is the sum of protons and electrons.
💡 Hint: Consider what the mass number indicates.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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Reference links
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