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Multiple choice

If an element is represented by the symbol 7M15, how many neutrons does it have?

  1. 1

  2. 7

  3. 8

  4. 14

  5. 22

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is the number of neutrons present in element, i.e. 15 - 7 = 8. 

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