APFIVE Conceptual Definition of Isotopes
A student is attempting to demonstrate the concept of isotopes by using a model that represents atoms with varying numbers of electrons instead of neutrons. What is the conceptual mistake in the student’s demonstration?
A
Isotopes differ in the number of electrons, not protons.
B
Isotopes differ in the number of protons, not electrons.
C
Isotopes differ in the number of neutrons, not electrons.
D
Isotopes differ in the number of atoms, not electrons.
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