2.3 - Atomic Number and Mass Number
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Practice Questions
Test your understanding with targeted questions
What does the atomic number represent?
💡 Hint: It's the letter 'Z'.
How do you find the mass number of an atom?
💡 Hint: Think of the formula: A = Z + N.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the atomic number of an atom?
💡 Hint: It's key to identifying the element.
True or False: The mass number is the sum of protons and electrons.
💡 Hint: Think about what contributes to mass.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
An unknown element has an atomic number of 12 and a mass number of 24. Calculate the number of neutrons and determine the element.
💡 Hint: Use the formula for calculating the number of neutrons.
If an element has 20 protons and 22 neutrons, and forms an ion with a +2 charge, what is the new number of electrons?
💡 Hint: Remember how ion charges affect electron count.
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