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If an element has 12 protons, 13 neutrons, and 15 electrons, what is its mass?
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25 votes
If an element has 12 protons, 13 neutrons, and 15 electrons, what is its mass?

User Michal Zmuda
by
4.5k points

1 Answer

8 votes

Answer:

25

Step-by-step explanation:

mass number = protons + neutrons

= 13 + 12 = 25

User Jared Chu
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