MCQOPTIONS
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| 1. |
Isotopes are atoms having the same [EAMCET 1978, 79; MP PMT 1980; CPMT 1973; BHU 2001; AFMC 2003] |
| A. | Atomic mass |
| B. | Mass number |
| C. | Atomic number |
| D. | Number of neutrons |
| Answer» D. Number of neutrons | |