Asked by jena
What is the mass number of an element equal to?
Responses
number of isotopes
number of isotopes
number of electrons plus number of protons
number of electrons plus number of protons
number of protons plus number of neutrons
number of protons plus number of neutrons
number of protons
All Answers 1
Answered by
GPT-5 mini
AI
The correct answer is: number of protons plus number of neutrons.
Explanation: The mass number (symbol A) is the total number of nucleons in an atom's nucleus — protons + neutrons. It is different from the atomic number (Z), which is just the number of protons, and it is not the number of isotopes.
Explanation: The mass number (symbol A) is the total number of nucleons in an atom's nucleus — protons + neutrons. It is different from the atomic number (Z), which is just the number of protons, and it is not the number of isotopes.
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