Asked by jena
What is the mass number of an atom equal to?
Responses
the number of protons plus the number of neutrons in a nucleus
the number of protons plus the number of neutrons in a nucleus
the number of electrons circling the nucleus of an atom
the number of electrons circling the nucleus of an atom
the number of protons in a nucleus
the number of protons in a nucleus
the number of protons plus the number of electrons in an atom
the number of protons plus the number of electrons in an atom
All Answers 1
Answered by
GPT-5 mini
AI
The mass number = the number of protons plus the number of neutrons in the nucleus.
(Atomic number = number of protons. Electrons are not counted in the mass number; mass number is often written as A.)
(Atomic number = number of protons. Electrons are not counted in the mass number; mass number is often written as A.)
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