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What is the mass number of an atom that consists of 20 protons, 20 neutrons, and 18 electrons?
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What is the mass number of an atom that consists of 20 protons, 20 neutrons, and 18 electrons?

User Prakashchhetri
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1 Answer

5 votes

Answer:

C)a mass number of 38

Step-by-step explanation:

yes

User Kaveri
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