

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 | |