MCQOPTIONS
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| 1. |
The -particle carries two positive charges. Its mass is very nearly equal to that of |
| A. | two protons |
| B. | an atom of helium |
| C. | sum of masses of two positrons and two neutrons |
| D. | two positrons as each positron carries a single positive charge |
| Answer» C. sum of masses of two positrons and two neutrons | |