McqMate
| Q. |
Isotopes differ in - |
| A. | No. of electrons |
| B. | No. of protons |
| C. | No. of neutrons |
| D. | Chemical reactivity |
| Answer» C. No. of neutrons | |
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Explanation: Isotopes have the same atomic number because they are the same element but have a different atomic mass because they contain a different number of neutrons. |
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