Which of the following statements about isotopes is true?
A)Isotopes of the same element differ only in the number of electrons they contain.
B)An isotope of an atom with a larger number of neutrons is larger than an isotope of the same atom that contains fewer neutrons.
C)Isotopes of the same element have the same mass.
D)Isotopes of the same element don't usually have the same properties.
E)Some elements have 3 or more naturally occurring isotopes.

Question

Quizplus · Accepted Answer

Isotopes are atoms of the same element that have different numbers of neutrons. This means that they can have different masses. Therefore, statement A and C are incorrect. Statement B is partly correct, as the isotope with more neutrons will generally have a larger mass, but size is not necessarily proportional to mass. Statement D is incorrect, as isotopes of the same element have very similar properties, differing mostly in their atomic mass. Statement E is true, some elements have three or more naturally occurring isotopes.

Which of the Following Statements About Isotopes Is True