12. describe what the isotopes of an element have in common and how they are different.
12. describe what the isotopes of an element have in common and how they are different.
Answer
Brief Explanations:
Isotopes of an element have the same number of protons (atomic number), which determines the element's identity. They differ in the number of neutrons, resulting in different mass - numbers.
Answer:
Isotopes of an element have the same number of protons. They differ in the number of neutrons.