Isotopes have the same atomic number but different atomic masses due to varying numbers of neutrons.
Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons. This results in different atomic masses for isotopes of the same element, even though they have the same atomic number.
Isotopes exhibit the same chemical behavior due to the same number of protons and electrons. The differences in neutrons exclusively lead to differences in mass numbers among isotopes.
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