b. Mass
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4. What characteristic of an element differs between isotopes?
a. Negative charge
b. Mass
c. Positive charge
d. All of the Above
Answers: 2
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On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density
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4. What characteristic of an element differs between isotopes?
a. Negative charge
b. Mass
b. Mass
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