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What is the mass number of an atom that has 12 neutrons and 11 protons? 24 23 12
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What is the mass number of an atom that has 12 neutrons and 11 protons?
24
23
12

User Obadiah
by
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2 Answers

1 vote

Answer:

23

Step-by-step explanation:

User Peter Tsung
by
4.8k points
1 vote

Answer:

23

Step-by-step explanation:

To find mass/atomic number of an atom, you add the proton and neutrons together.

User Paul Samsotha
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