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1. Which of these has a negative charge?
Protons Neutrons Electrons Quarks None of these

2. How many significant figures: 100.
1 2 3 4 5

3. How many significant figures: 26 * 300
Answer:

4. 26.01/4.0
6.5 6.50 6.503 7 All of these

5. When an element has a different number of neutrons, it is called a/an...
Anomaly Differentiated Mutated Isotope None of these

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