Isotopes of an element have the same number of
Answer and explanation
Correct answer: B. protons but a different number of neutrons
- Step 1: Isotopes differ only in neutron number, so their mass numbers differ. Answer: protons but a different number of neutrons. Why not the others: neutrons but different protons: Different protons would make a different element. protons and neutrons: That would make them identical atoms. electrons but different protons: A neutral atom has equal protons and electrons.
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