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The isotopes of an element contain :(a) same number of neutrons but different number of protons(b) same number of neutrons but different number of electrons(c) different number of protons as well as different number of neutrons(d) different number of neutrons but same number of protons
Correct Answer: (d) different number of neutrons but same number of protons
Explanation: Isotopes are the atoms of the same element with the same atomic number but different mass numbers.
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