A) a neutrino alone is emitted
B) a proton and neutrino are emitted
C) a proton alone is emitted
D) a proton and an antineutrino are emitted
Correct Answer: D
Solution :
A beta minus particle \[({{\beta }^{-}})\] is an electron. Emission of \[{{\beta }^{-}}\] involves transformation of a neutron into a proton, an electron and a third particle called antineutrino \[(\overline{v}).\] \[_{0}{{n}^{1}}{{=}_{1}}{{p}^{1}}{{+}_{-1}}{{\beta }^{0}}+\overline{v}\]
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