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A certain atom has 20 electrons, 21 neutrons, and 20 protons. What is the atomic mass of the atom?
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A certain atom has 20 electrons, 21 neutrons, and 20 protons. What is the atomic mass of the atom?

User Zoran
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1 Answer

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The answer is 41

Explanation
To get the atomic mass you add the number of protons and neutrons

Example

21 neutrons + 20 protons = 41 Atomic mass
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User Kevin Peel
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