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the alpha particle carries two positive charge. Its mass is very nearly equal to that of

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Q.

The alpha particle carries two positive charge. 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 & Explanation
Option: [B]

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