Exam-style question
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An atom has a mass number of 14 and contains 6 protons. How many neutrons does it have?.
- A.8
- B.6
- C.14
- D.20
Model answer
What a good answer should say
- 8
Explanation
Why this works
The number of neutrons can be calculated using the formula: Neutrons = Mass number - Protons. Here, Neutrons = 14 - 6 = 8.
Common mistake
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