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The atomic mass of an element is equal to the:

number of protons
atomic number
number of protons and neutrons
mass of protons, neutrons, and electrons

User Frab
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2 Answers

3 votes

Answer:

number of protons & neutrons

Step-by-step explanation:

User Rasmus Kaj
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6 votes

Answer: total number of protons and neutron

Step-by-step explanation:

User Cromax
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