The "atomic weight" of an atom reflects the average number of
A) protons.
B) neutrons.
C) electrons.
D) protons + neutrons.
E) protons + neutrons + electrons.

Name: The "atomic weight" of an atom reflects the average number of A) protons. B) neutrons. C) electrons. D) protons + neutrons. E) protons + neutrons + electrons.
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Question

Quizplus · Accepted Answer

Atomic weight is the sum of the number of protons and neutrons in an atom's nucleus, as electrons contribute very little to the mass of an atom.

The "Atomic Weight" of an Atom Reflects the Average Number