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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the atomic number (Z) represent?
💡 Hint: Think about what defines the identity of an element.
Question 2
Easy
How many neutrons does a neutral atom of lithium (Z = 3) have?
💡 Hint: Consider the mass number, which includes both protons and neutrons.
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 the atomic number represent?
- Number of protons
- Number of electrons
- Number of neutrons
💡 Hint: Remember, it’s crucial for identifying the element.
Question 2
True or False: The atomic number of an atom can vary for isotopes of the same element.
- True
- False
💡 Hint: Think about how protons and neutrons are defined in isotopes.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An element has atomic number 15. Determine its identity and how many electrons it has in a neutral state.
💡 Hint: Use the concept that the atomic number equals the number of electrons in a neutral atom.
Question 2
Explain how changing the atomic number of an element alters its identity.
💡 Hint: Think about what constitutes an element in terms of atomic structure.
Challenge and get performance evaluation