MCQOPTIONS
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MCQOPTIONS
| 1. |
The mass of an ULFA ray emitted from a radioactive element is 6.645×10⁻²⁷ kg, which is equal to? |
| A. | of hydrogen nuclei |
| B. | negatively charged particle |
| C. | of helium nucleus |
| D. | of neutrons |
| Answer» D. of neutrons | |