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9 November, 00:05

What is the mass number of an atom with 6 protons and 7 neutrons

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Answers (2)
  1. 9 November, 00:21
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    Hi, the answer is 13, because the total of protons and neutrons together form the mass, in other words there are 6 protons and 7 neutrons, 6+7=13.
  2. 9 November, 02:00
    0
    Mass number is 12.01g What you do first to find is find how many protons it such as this atom has 6 so it going to be number 6 on the periodic table then find the mass
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