The "atomic weight" of an atom reflects the average number of A) protons. B) neutrons. C) electrons. D) protons + neutrons. E) protons + neutrons + electrons.
Added by Michael L.
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B) Neutrons contribute to the mass of an atom, but the number of neutrons can vary in isotopes of the same element. C) Electrons have a negligible mass compared to protons and neutrons, so they don't significantly contribute to atomic weight. D) The atomic weight Show more…
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The atomic weight (atomic mass) of an element a. equals the number of neutrons in an atom. b. equals the number of protons in an atom. c. equals the number of electrons in an atom. d. equals the number of neutrons plus the number of protons. e. depends on the relative abundances of its electrons and neutrons.
Sri K.
The mass number of an atom depends primarily on the number of a. protons and neutrons. b. positrons. c. neutrons and electrons. d. protons and electrons.
The atomic weight (atomic mass) of an element $a$. equals the number of neutrons in an atom. $b$. equals the number of protons in an atom. $c$. equals the number of electrons in an atom. d. equals the number of neutrons plus the number of protons. $e .$ depends on the relative abundances of its isotopes.
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