Practice Atomic Number (z) (4.7.1) - Atomic Structure

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6 sample questions

Question 1.
What does the atomic number (Z) represent?
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Think about what defines the identity of an element.
Question 2.
How many neutrons does a neutral atom of lithium (Z = 3) have?
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Consider the mass number, which includes both protons and neutrons.
3Question 3.
What does the atomic number represent?
- Number of protons
- Number of electrons
- Number of neutrons
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Remember, it’s crucial for identifying the element.
4Question 4.
True or False: The atomic number of an atom can vary for isotopes of the same element.
- True
- False
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Think about how protons and neutrons are defined in isotopes.
Question 5.
An element has atomic number 15. Determine its identity and how many electrons it has in a neutral state.
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Use the concept that the atomic number equals the number of electrons in a neutral atom.
Question 6.
Explain how changing the atomic number of an element alters its identity.
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Think about what constitutes an element in terms of atomic structure.

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