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constants
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1. How many neutrons in carbon-13?
13 0 1 7 6

2. How many electrons in boron-11?
11 5 6 10 None of these

3. Which of these is not an element?
Uranium Plutonium Iron Gold Brass

4. Which of these has a positive charge?
Protons Neutrons Electrons Quarks None of these

5. What do you NOT find in a nucleus?
Protons Neutrons Electrons Quarks None of these

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