MCQOPTIONS
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| 1. |
In the nucleus of \[_{20}C{{a}^{40}}\] there are [CPMT 1990; EAMCET 1991] |
| A. | 40 protons and 20 electrons |
| B. | 20 protons and 40 electrons |
| C. | 20 protons and 20 neutrons |
| D. | 20 protons and 40 neutrons |
| Answer» D. 20 protons and 40 neutrons | |