Which of the following sub-atomic particle accompanies an electron emission in Beta-deca

Q. Which of the following sub-atomic particle accompanies an electron emission in Beta^-decay?
Answer: antineutrino
Notes: The emission of electron in β⁻decay is accompanied by the emission of an antineutrino (ν ) and in β⁺ decay, a neutrino (ν) is generated.

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