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  • What will be the number of neutrons in an atom if it cont...
Multiple choice

What will be the number of neutrons in an atom if it contains 12 protons and have atomic mass 25?

  1. 12

  2. 13

  3. 37

  4. 14

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

Number of neutrons = Atomic mass - Number of protons                                     = 25 - 12                                     = 13

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