Practice Atomic Number And Mass Number (4.7) - Atomic Structure

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10 questions

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6 sample questions

Question 1.
What is the atomic number of oxygen?
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Look up the position of oxygen on the periodic table.
Question 2.
How do you calculate the mass number?
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Think of the formula A = Z + N.
3Question 3.
What does atomic number represent?
- Number of protons
- Number of neutrons
- Total atomic mass
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Reflect on how elements are identified.
4Question 4.
True or False: The mass number is the sum of protons and electrons.
- True
- False
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Consider what the mass number indicates.
Question 5.
A particular element has an atomic number of 15 and a mass number of 31. How many neutrons does it have?
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Use the formula for mass number.
Question 6.
If an element has a mass number of 40 and contains 18 neutrons, what is its atomic number?
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Subtract the neutrons from the mass number.

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